| Common Name | Scientific Name | Code |
|---|
| n/a | Carex ?aestivaliformis Mackenzie [aestivalis ? gracillima] | CAAE3 |
| n/a | Carex ?caesariensis Mackenzie (pro sp.) [pellita ? trichocarpa] | CACA22 |
| n/a | Carex ?calderi B. Boivin | CACA90 |
| n/a | Carex ?deamii F.J. Herm. [shortiana ? typhina] | CADE13 |
| n/a | Carex ?hartii Dewey (pro sp.) [lurida ? retrorsa] | CAHA28 |
| n/a | Carex ?helvola Blytt (pro sp.) [canescens ? lachenalii] | CAHE20 |
| n/a | Carex ?kenaica Lepage [ramenskii ? subspathacea] | CAKE5 |
| n/a | Carex ?knieskernii Dewey (pro sp.) [arctata ? castanea] | CAKN |
| n/a | Carex ?limula T. Fries (pro sp.) [aquatilis ? bigelowii] | CALI16 |
| n/a | Carex ?olneyi Boott [bullata ? rostrata] | CAOL4 |
| n/a | Carex ?oneillii Lepage [lenticularis ? rostrata] | CAON |
| n/a | Carex ?paludivagans Drury (pro sp.) [rostrata ? rotundata] | CAPA49 |
| n/a | Carex ?physocarpioides Lepage [saxatilis ? utriculata] | CAPH8 |
| n/a | Carex ?pseudohelvola Kihlm. (pro sp.) [canescens ? mackenziei] | CAPS4 |
| n/a | Carex ?stenolepis Lessing [saxatilis ? vesicaria] | CAST55 |
| n/a | Carex ?subimpressa Clokey (pro sp.) [hyalinolepis ? pellita] | CASU14 |
| n/a | Carex ?subviridula Fern. [flava ? viridula] | CASU15 |
| n/a | Carex ?sullivantii Boott [gracillima ? hirtifolia] | CASU16 |
| n/a | Carex ?trichina Fern. [tenuiflora ? trisperma] | CATR11 |
| n/a | Carex angustisquama Franch. | CAAN28 |
| n/a | Carex austroalpina Bech. | CAAU23 |
| n/a | Carex baccans Nees | CABA23 |
| n/a | Carex bonplandii Kunth [excluded] | CABO22 |
| n/a | Carex canariensis Kuk. | CACA91 |
| n/a | Carex depauperata Curtis ex With. | CADE31 |
| n/a | Carex digitalis Willd. var. asymmetrica Fern. | CADIA |
| n/a | Carex digitalis Willd. var. macropoda Fern. | CADIM |
| n/a | Carex diluta Bieb. | CADI44 |
| n/a | Carex dioica L. [excluded] | CADI38 |
| n/a | Carex divulsa Stokes ssp. leersii (Kneuck.) W. Koch | CADIL2 |
| n/a | Carex fuirenoides Gaudich. | CAFU15 |
| n/a | Carex hordeistichos Vill. | CAHO24 |
| n/a | Carex houstonii Torr. [excluded] | CAHO27 |
| n/a | Carex liparocarpos Gaudin | CALI28 |
| n/a | Carex liparocarpos Gaudin ssp. bordzilowskii (V. I. Krecz.) T. V. Egorova | CALIB3 |
| n/a | Carex melanocarpa Cham. ex Trautv. [excluded] | CAME38 |
| n/a | Carex michelii Host | CAMI47 |
| n/a | Carex morrowii Boott | CAMO31 |
| n/a | Carex otrubae Podp. | CAOT2 |
| n/a | Carex pachystylis J. Gay | CAPA73 |
| n/a | Carex paniculata L. | CAPA74 |
| n/a | Carex pilulifera L. | CAPI20 |
| n/a | Carex pulicaris L. | CAPU43 |
| n/a | Carex remota L. [excluded] | CARE20 |
| n/a | Carex scaposa C. B. Clarke | CASC36 |
| n/a | Carex schiedeana Kunze [excluded] | CASC83 |
| n/a | Carex scirpoidea Michx. ssp. convoluta (K?kenth.) Dunlop | CASCC5 |
| n/a | Carex scirpoidea Michx. ssp. stenochlaena (Holm) A.& D. L?ve | CASCS9 |
| n/a | Carex sempervirens Vill. | CASE28 |
| n/a | Carex stellata Mackenzie [excluded] | CAST59 |
| n/a | Carex stenocarpa Turcz. ex Krecz. [excluded] | CAST60 |
| n/a | Carex timida Naczi & B.A. Ford | CATI6 |
| n/a | Carex tomentosa L. | CATO20 |
| n/a | Carex vacillans Drej. ex Hartman | CAVA15 |
| n/a | Carex vulpina L. | CAVU7 |
| n/a | Cyperus ?deamii O'Neill (pro sp.) [esculentus ? strigosus] | CYDE9 |
| n/a | Cyperus compactus Retz. | CYCO24 |
| n/a | Cyperus flavidus Retz. | CYFL11 |
| n/a | Cyperus manimae Kunth var. divergens (Kunth) K?kenth. [excluded] | CYMAD |
| n/a | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. porcata S.G. Sm. | ELACP |
| n/a | Eleocharis palustris (L.) Roemer & J.A. Schultes var. vigens Bailey | ELPAV |
| n/a | Eriophorum ?beringianum Raymond [angustifolium ? chamissonis] | ERBE4 |
| n/a | Eriophorum ?churchillianum Lepage [angustifolium ? vaginatum] | ERCH11 |
| n/a | Eriophorum ?porsildii Raymond [chamissonis ? vaginatum] | ERPO7 |
| n/a | Eriophorum ?pylaieanum Raymond [russeolum ? vaginatum] | ERPY3 |
| n/a | Eriophorum ?rousseauanum Raymond [angustifolium ? scheuchzeri] | ERRO4 |
| n/a | Fimbristylis boninensis Hayata | FIBO |
| n/a | Fimbristylis harrisii (Britt.) J.E. Adams [excluded] | FIHA6 |
| n/a | Hypolytrum dissitiflorum Steud. | HYDI5 |
| n/a | Hypolytrum nemorum sensu Parham, non Spreng. | HYNE3 |
| n/a | Hypolytrum Pers. | HYPOL2 |
| n/a | Isolepis fluitans (L.) R. Br. | ISFL4 |
| n/a | Lepironia articulata (Retz.) Domin | LEAR30 |
| n/a | Lepironia Pers. | LEPIR |
| n/a | Machaerina mariscoides (Gaudich.) Kern ssp. colpodes (Lauterb.) Koyama | MAMAC |
| n/a | Mapania Aubl. | MAPAN |
| n/a | Mapania flavinux Koyama | MAFL10 |
| n/a | Mapania macrocephala K. Schum ex Warb | MAMA31 |
| n/a | Mapania pandanophylla (Domin) Koyama | MAPA20 |
| n/a | Mapania parvibracteata (B.B. Clarke) Koyama | MAPA21 |
| n/a | Morelotia Gaud. | MOREL3 |
| n/a | Rhynchospora chalarocephala Fern. & Gale var. angusta Gale [excluded] | RHCHA2 |
| n/a | Rhynchospora polyphylla Vahl [excluded] | RHPO7 |
| n/a | Schoenoplectus ?carinatus (Sm.) Palla [tabernaemontani ? triqueter] | SCCA25 |
| n/a | Schoenoplectus ?contortus (Eames) S.G. Sm. [americanus ? pungens] | SCCO20 |
| n/a | Schoenoplectus ?oblongus (T. Koyama) Soj?k [acutus ? heterochaetus] | SCOB10 |
| n/a | Schoenoplectus ?steinmetzii (Fern.) S.G. Sm. [heterochaetus ? tabernaemontani] | SCST10 |
| n/a | Schoenus ferrugineus L. [excluded] | SCFE8 |
| n/a | Schoenus punctatus R. Br. | SCPU17 |
| n/a | Scirpodendron ghaeri Merrill | SCGH |
| n/a | Scirpodendron Zipp. ex Kurz | SCIRP3 |
| n/a | Scirpus ?peckii Britt. (pro sp.) [atrocinctus ? atrovirens ? pedicellatus] | SCPE2 |
| n/a | Scirpus littoralis Schrad. | SCLI16 |
| n/a | Scirpus littoralis Schrad. var. capensis (Boeck.) Koyama | SCLIC |
| Abildgaardia ovata | Abildgaardia monostachya (L.) Vahl | ABMO4 |
| Abildgaardia ovata | Cyperus monostachyos L. | CYMO10 |
| Abildgaardia ovata | Fimbristylis monostachya (L.) Hassk. | FIMO2 |
| Abildgaardia ovata | Fimbristylis ovata (Burm. f.) J. Kern | FIOV |
| abruptbeak sedge | Carex abrupta Mackenzie | CAAB2 |
| acute spikerush | Eleocharis acutangula (Roxb.) J.A. Schultes | ELAC5 |
| Alabama swamp flatsedge | Cyperus ligularis L. | CYLI |
| Alaska brownish sedge | Carex brunnescens (Pers.) Poir. ssp. alaskana Kalela | CABRA2 |
| algal bulrush | Websteria confervoides (Poir.) S. Hooper | WECO |
| algal bulrush | Websteria S.H. Wright | WEBST |
| alpine bulrush | Trichophorum alpinum (L.) Pers. | TRAL7 |
| alpine flatsedge | Cyperus fauriei K?kenth. | CYFA3 |
| alpine nerve sedge | Carex neurophora Mackenzie | CANE6 |
| American halfchaff sedge | Lipocarpha maculata (Michx.) Torr. | LIMA4 |
| American woollyfruit sedge | Carex lasiocarpa Ehrh. var. americana Fern. | CALAA |
| analogue sedge | Carex simulata Mackenzie | CASI2 |
| anglestem beaksedge | Rhynchospora caduca Ell. | RHCA9 |
| annual fimbry | Fimbristylis annua (All.) Roemer & J.A. Schultes | FIAN |
| Appalachian sedge | Carex appalachica J. Webber & P.W. Ball | CAAP5 |
| Arapaho sedge | Carex arapahoensis Clokey | CAAR13 |
| arctic cottongrass | Eriophorum callitrix Cham. ex C.A. Mey. | ERCA13 |
| arctic cottongrass | Eriophorum callitrix Cham. ex C.A. Mey. var. callitrix | ERCAC2 |
| arctic cottongrass | Eriophorum callitrix Cham. ex C.A. Mey. var. moravium Raymond | ERCAM |
| arctic marsh sedge | Carex holostoma Drej. | CAHO4 |
| Arizona spikerush | Eleocharis cancellata S. Wats. | ELCA9 |
| Arkansas sedge | Carex arkansana (Bailey) Bailey | CAAR5 |
| Asian flatsedge | Cyperus amuricus Maxim. | CYAM2 |
| Asian spikesedge | Kyllinga squamulata Thonn. ex Vahl | KYSQ |
| Assiniboia sedge | Carex assiniboinensis W. Boott | CAAS2 |
| Australian flatsedge | Cyperus trinervis R. Br. | CYTR3 |
| awned halfchaff sedge | Lipocarpha aristulata (Coville) G. Tucker | LIAR6 |
| Back's sedge | Carex backii Boott | CABA3 |
| Bahama beaksedge | Rhynchospora lindeniana Griseb. | RHLI |
| Bahama beaksedge | Rhynchospora lindeniana Griseb. var. bahamensis (Britt.) Gale | RHLIB |
| Bahama fimbry | Fimbristylis inaguensis Britt. | FIIN |
| Baikal sedge | Carex sabulosa Turcz. ex Kunth | CASA5 |
| Bailey's sedge | Carex baileyi Britt. | CABA7 |
| bald spikerush | Eleocharis erythropoda Steud. | ELER |
| Baldwin's beaksedge | Rhynchospora baldwinii Gray | RHBA |
| Baldwin's flatsedge | Cyperus croceus Vahl | CYCR6 |
| Baldwin's nutrush | Scleria baldwinii (Torr.) Steud. | SCBA2 |
| Baldwin's spikerush | Eleocharis baldwinii (Torr.) Chapman | ELBA2 |
| Baltzell's sedge | Carex baltzellii Chapman ex Dewey | CABA8 |
| barbedbristle bulrush | Scirpus ancistrochaetus Schuyler | SCAN5 |
| Barratt's sedge | Carex barrattii Schwein. & Torr. | CABA9 |
| bashful bulrush | Trichophorum planifolium (Spreng.) Palla | TRPL6 |
| beach sedge | Carex silicea Olney | CASI6 |
| beachstar | Remirea Aubl. | REMIR |
| beachstar | Remirea maritima Aubl. | REMA3 |
| beaked sedge | Carex rostrata Stokes | CARO6 |
| beaked spikerush | Eleocharis rostellata (Torr.) Torr. | ELRO2 |
| beaksedge | Rhynchospora Vahl | RHYNC3 |
| bear sedge | Carex ursina Dewey | CAUR |
| bearded flatsedge | Cyperus squarrosus L. | CYSQ |
| beautiful spikerush | Eleocharis bella (Piper) Svens. | ELBE |
| Bebb's sedge | Carex bebbii Olney ex Fern. | CABE2 |
| Bellardi bog sedge | Kobresia myosuroides (Vill.) Fiori | KOMY |
| bent sedge | Carex styloflexa Buckl. | CAST9 |
| bentawn flatsedge | Cyperus reflexus Vahl | CYRE2 |
| Bering Sea sedge | Carex microchaeta Holm ssp. nesophila (Holm) E. Murr. | CAMIN |
| Bicknell's sedge | Carex bicknellii Britt. | CABI3 |
| Bicknell's sedge | Carex opaca (F.J. Herm.) P. Rothr. & Reznicek | CAOP5 |
| Bigelow's sedge | Carex bigelowii Torr. ex Schwein. | CABI5 |
| bigleaf sedge | Carex amplifolia Boott | CAAM10 |
| Billings's sedge | Carex trisperma Dewey var. billingsii Knight | CATRB |
| bird beaksedge | Rhynchospora filiformis Vahl | RHFI2 |
| birdcatching sedge | Uncinia hamata (Sw.) Urban | UNHA |
| birdcatching sedge | Uncinia Pers. | UNCIN |
| black alpine sedge | Carex nigricans C.A. Mey. | CANI2 |
| black bogrush | Schoenus nigricans L. | SCNI |
| black edge sedge | Carex nigromarginata Schwein. | CANI3 |
| black flatsedge | Cyperus niger Ruiz & Pav?n | CYNI2 |
| black sand spikerush | Eleocharis pachycarpa Desv. | ELPA |
| black sedge | Carex nova Bailey | CANO3 |
| black spikerush | Eleocharis nigrescens (Nees) Steud. | ELNI2 |
| blackandwhite sedge | Carex albonigra Mackenzie | CAAL6 |
| blackfruit spikerush | Eleocharis melanocarpa Torr. | ELME |
| blackgirdle bulrush | Scirpus atrocinctus Fern. | SCAT4 |
| blackroot sedge | Carex elynoides Holm | CAEL3 |
| blister sedge | Carex vesicaria L. | CAVE6 |
| blister sedge | Carex vesicaria L. var. distenta Fries | CAVED |
| blister sedge | Carex vesicaria L. var. jejuna Fern. | CAVEJ |
| blister sedge | Carex vesicaria L. var. monile (Tuckerman) Fern. | CAVEM2 |
| blister sedge | Carex vesicaria L. var. raeana (Boott) Fern. | CAVER |
| blister sedge | Carex vesicaria L. var. vesicaria | CAVEV2 |
| Blue Ridge sedge | Carex lucorum Willd. ex Link | CALU17 |
| Blue Ridge sedge | Carex lucorum Willd. ex Link var. austrolucorum J. Rettig | CALUA2 |
| Blue Ridge sedge | Carex lucorum Willd. ex Link var. lucorum | CALUL |
| blue sedge | Carex glaucodea Tuckerman ex Olney | CAGL6 |
| blue umbrella-sedge | Fuirena caerulescens Steud. | FUCA5 |
| blunt broom sedge | Carex tribuloides Wahlenb. | CATR7 |
| blunt broom sedge | Carex tribuloides Wahlenb. var. sangamonensis Clokey | CATRS2 |
| blunt broom sedge | Carex tribuloides Wahlenb. var. tribuloides | CATRT2 |
| blunt spikerush | Eleocharis obtusa (Willd.) J.A. Schultes | ELOB2 |
| Blysmus rufus | Blysmopsis rufa (Huds.) Oteng-Yeboah | BLRU3 |
| Blysmus rufus | Scirpus rufus (Huds.) Schrad. | SCRU2 |
| Blysmus rufus | Scirpus rufus (Huds.) Schrad. var. neogaeus Fern. | SCRUN |
| bog bulrush | Schoenoplectus mucronatus (L.) Palla | SCMU10 |
| bog sedge | Kobresia Willd. | KOBRE |
| bogrush | Schoenus calostachyus Poir. | SCCA23 |
| bogrush | Schoenus L. | SCHOE4 |
| bogrush | Schoenus tendo Banks & Soland. ex Hook. f. | SCTE14 |
| Bolander's sedge | Carex bolanderi Olney | CABO2 |
| Bolander's spikerush | Eleocharis bolanderi Gray | ELBO |
| Boott's sedge | Carex picta Steud. | CAPI5 |
| boreal bog sedge | Carex magellanica Lam. | CAMA12 |
| boreal bog sedge | Carex magellanica Lam. ssp. irrigua (Wahlenb.) Hult | CAMAI2 |
| boreal bog sedge | Carex magellanica Lam. ssp. magellanica Lam. [excluded] | CAMAM15 |
| bottlebrush bulrush | Isolepis hystrix (Thunb.) Nees | ISHY2 |
| bottlebrush sedge | Carex hystericina Muhl. ex Willd. | CAHY4 |
| Bourgeau's nutrush | Scleria bourgeaui Boeckl. | SCBO3 |
| bracted nutrush | Scleria bracteata Cav. [excluded] | SCBR6 |
| Brainerd's sedge | Carex brainerdii Mackenzie | CABR7 |
| Brewer's sedge | Carex breweri Boott | CABR12 |
| bright green spikerush | Eleocharis olivacea Torr. | ELOL |
| bright green spikerush | Eleocharis olivacea Torr. var. olivacea | ELOLO |
| bright green spikerush | Eleocharis olivacea Torr. var. reductiseta (Schuyler & Ferren) Schuyler & Ferren | ELOLR |
| bristleleaf bulrush | Isolepis setacea (L.) R. Br. | ISSE2 |
| bristleleaf sedge | Carex eburnea Boott | CAEB2 |
| bristly flatsedge | Cyperus hystricinus Fern. | CYHY |
| bristlystalked sedge | Carex leptalea Wahlenb. | CALE10 |
| bristlystalked sedge | Carex leptalea Wahlenb. ssp. leptalea | CALEL4 |
| Britton's sedge | Carex tetrastachya Scheele | CATE29 |
| Britton's spikerush | Eleocharis brittonii Svens. ex Small | ELBR |
| broad looseflower sedge | Carex laxiflora Lam. | CALA19 |
| broad looseflower sedge | Carex laxiflora Lam. var. laxiflora | CALAL5 |
| broad looseflower sedge | Carex laxiflora Lam. var. serrulata F.J. Herm. | CALAS |
| broadfruit horned beaksedge | Rhynchospora careyana Fern. | RHCA13 |
| broadleaf sedge | Carex platyphylla Carey | CAPL5 |
| broadscale sedge | Carex platylepis Mackenzie | CAPL8 |
| broadvein sedge | Carex lativena S.D. & G.D. Jones | CALA76 |
| broadwing sedge | Carex alata Torr. | CAAL3 |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. | CABR14 |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. ssp. bromoides | CABRB6 |
| bromelike sedge | Carex bromoides Schkuhr ex Willd. ssp. montana Naczi | CABRM2 |
| broom sedge | Carex scoparia Schkuhr ex Willd. | CASC11 |
| broom sedge | Carex scoparia Schkuhr ex Willd. var. scoparia | CASCS |
| broom sedge | Carex scoparia Schkuhr ex Willd. var. tessellata Fern. & Wieg. | CASCT |
| brown beaksedge | Rhynchospora fusca (L.) Ait. f. | RHFU |
| brown flatsedge | Cyperus fuscus L. | CYFU3 |
| brown sedge | Carex subfusca W. Boott | CASU6 |
| brownish beaksedge | Rhynchospora capitellata (Michx.) Vahl | RHCA12 |
| brownish sedge | Carex brunnescens (Pers.) Poir. | CABR15 |
| brownish sedge | Carex brunnescens (Pers.) Poir. ssp. brunnescens | CABRB3 |
| brownish sedge | Carex brunnescens (Pers.) Poir. ssp. sphaerostachya (Tuckerman) Kalela | CABRS |
| Bryan's flatsedge | Cyperus pennatiformis K?kenth. var. bryanii K?kenth. | CYPEB |
| Bryson's sedge | Carex brysonii Naczi | CABR44 |
| Bulbostylis barbata | Scirpus barbatus Rottb. | SCBA3 |
| Bulbostylis barbata | Stenophyllus barbatus (Rottb.) Britt. | STBA5 |
| Bulbostylis capillaris ssp. antillana | Bulbostylis antillana (Britt.) Fern. | BUAN |
| Bulbostylis capillaris ssp. capillaris | Bulbostylis capillaris (L.) Kunth ex C.B. Clarke var. crebra Fern. | BUCAC2 |
| Bulbostylis capillaris ssp. capillaris | Bulbostylis capillaris (L.) Kunth ex C.B. Clarke var. isopoda Fern. | BUCAI |
| Bulbostylis capillaris ssp. capillaris | Fimbristylis capillaris (L.) Gray | FICA6 |
| Bulbostylis capillaris ssp. capillaris | Scirpus capillaris L. | SCCA7 |
| Bulbostylis capillaris ssp. capillaris | Stenophyllus capillaris (L.) Britt. | STCA17 |
| Bulbostylis ciliatifolia var. ciliatifolia | Scirpus ciliatifolius Ell. | SCCI3 |
| Bulbostylis ciliatifolia var. ciliatifolia | Stenophyllus ciliatifolius (Ell.) C. Mohr | STCI6 |
| Bulbostylis ciliatifolia var. coarctata | Bulbostylis coarctata (Ell.) Fern. | BUCO |
| Bulbostylis ciliatifolia var. coarctata | Scirpus coarctatus Ell. | SCCO11 |
| Bulbostylis ciliatifolia var. coarctata | Stenophyllus carteri Britt. ex Small | STCA15 |
| Bulbostylis ciliatifolia var. coarctata | Stenophyllus coarctatus (Ell.) Britt. | STCO16 |
| Bulbostylis curassavica | Fimbristylis curassavica (Britt.) Alain | FICU |
| Bulbostylis curassavica | Stenophyllus curassavicus Britt. | STCU7 |
| Bulbostylis funckii | Isolepis funckii Steud. | ISFU |
| Bulbostylis junciformis | Bulbostylis papillosa K?kenth. | BUPA5 |
| Bulbostylis junciformis | Isolepis junciformis Kunth | ISJU |
| Bulbostylis juncoides | Bulbostylis fendleri C.B. Clarke | BUFE2 |
| Bulbostylis juncoides | Bulbostylis juncoides (Vahl) K?kenth. var. ampliceps K?kenth. | BUJUA |
| Bulbostylis juncoides | Fimbristylis juncoides (Vahl) Alain | FIJU |
| Bulbostylis pauciflora | Fimbristylis portoricensis (Britt.) Alain | FIPO |
| Bulbostylis pauciflora | Oncostylis pauciflora Liebm. | ONPA2 |
| Bulbostylis pauciflora | Stenophyllus portoricensis Britt. | STPO6 |
| Bulbostylis schaffneri | Scirpus schaffneri Boeckl. | SCSC7 |
| Bulbostylis stenophylla | Scirpus stenophyllus Ell. | SCST4 |
| Bulbostylis stenophylla | Stenophyllus stenophyllus (Ell.) Britt. | STST7 |
| Bulbostylis vestita | Fimbristylis vestita (Kunth) Hemsl. | FIVE3 |
| Bulbostylis vestita | Isolepis vestita Kunth | ISVE4 |
| Bulbostylis warei | Isolepis warei Torr. | ISWA2 |
| Bulbostylis warei | Stenophyllus warei (Torr.) Britt. | STWA2 |
| bulrush | Blysmus Panzer ex J.A. Schultes | BLYSM3 |
| bulrush | Isolepis R. Br. | ISOLE |
| bulrush | Oxycaryum Nees | OXYCA |
| bulrush | Schoenoplectus (Reichenb.) Palla | SCHOE6 |
| bulrush | Scirpoides Seguier | SCIRP2 |
| bulrush | Scirpus L. | SCIRP |
| bulrush | Scirpus litoralis Kuntze | SCLI14 |
| bulrush | Trichophorum Pers. | TRICH22 |
| bunched beaksedge | Rhynchospora cephalantha Gray | RHCE |
| burr reed sedge | Carex sparganioides Muhl. ex Willd. | CASP3 |
| burr sedge | Lagenocarpus guianensis Lindl. & Nees | LAGU |
| Bush's sedge | Carex bushii Mackenzie | CABU5 |
| Bush's umbrella-sedge | Fuirena bushii Kral | FUBU |
| button sedge | Carex bullata Schkuhr ex Willd. | CABU7 |
| buttonbush flatsedge | Cyperus cephalanthus Torr. & Hook. | CYCE |
| Buxbaum's sedge | Carex buxbaumii Wahlenb. | CABU6 |
| California beaksedge | Rhynchospora californica Gale | RHCA10 |
| California bulrush | Schoenoplectus californicus (C.A. Mey.) Palla | SCCA11 |
| California sawgrass | Cladium californicum (S. Wats.) O'Neill | CLCA2 |
| California sedge | Carex californica Bailey | CACA9 |
| Canada spikesedge | Eleocharis geniculata (L.) Roemer & J.A. Schultes | ELGE |
| Canby's bulrush | Schoenoplectus etuberculatus (Steud.) Soj | SCET2 |
| capillary hairsedge | Bulbostylis ciliatifolia (Ell.) Fern. | BUCI |
| capillary hairsedge | Bulbostylis ciliatifolia (Ell.) Fern. var. ciliatifolia | BUCIC2 |
| capillary hairsedge | Bulbostylis ciliatifolia (Ell.) Fern. var. coarctata (Ell.) Kral | BUCIC |
| capitate sedge | Carex capitata L. | CACA13 |
| capitate sedge | Carex capitata L. ssp. arctogena (H. Sm.) Hiitonen | CACAA2 |
| capitate sedge | Carex capitata L. ssp. capitata | CACAC7 |
| Carex ?limula | Carex ?nearctica Raymond | CANE19 |
| Carex ?physocarpioides | Carex ambusta Boott | CAAM20 |
| Carex ?physocarpioides | Carex saxatilis L. var. major Olney | CASAM |
| Carex ?stenolepis | Carex ?anticostensis (Fern.) Lepage | CAAN16 |
| Carex ?stenolepis | Carex ?anticostensis (Fern.) Lepage var. inflatior Lepage (pro nm.) | CAANI |
| Carex ?stenolepis | Carex ?anticostensis (Fern.) Lepage var. longidens Lepage (pro nm.) | CAANL |
| Carex ?stenolepis | Carex ?anticostensis (Fern.) Lepage var. minor Lepage (pro nm.) | CAANM2 |
| Carex ?stenolepis | Carex grahamii Boott. | CAGR38 |
| Carex ?stenolepis | Carex mainensis Porter ex Britt. | CAMA55 |
| Carex ?stenolepis | Carex rostrata Stokes var. anticostensis Fern. | CAROA3 |
| Carex abscondita | Carex abscondita Mackenzie var. glauca (Chapman) Fern. | CAABG |
| Carex abscondita | Carex abscondita Mackenzie var. rostellata Fern. | CAABR |
| Carex abscondita | Carex magnifolia Mackenzie | CAMA19 |
| Carex acutiformis | Carex paludosa Good var. kochiana (DC.) Husn. | CAPAK |
| Carex adelostoma | Carex morrisseyi Porsild | CAMO22 |
| Carex aggregata | Carex sparganioides Muhl. ex Willd. var. aggregata (Mackenzie) Gleason | CASPA2 |
| Carex albicans var. albicans | Carex artitecta Mackenzie | CAAR17 |
| Carex albicans var. albicans | Carex artitecta Mackenzie var. subtilirostris F.J. Herm. | CAARS |
| Carex albicans var. albicans | Carex emmonsii Dewey ex Torr. var. muehlenbergii (Gray) J. Rettig | CAEMM |
| Carex albicans var. albicans | Carex nigromarginata Schwein. var. muehlenbergii (Gray) Gleason | CANIM2 |
| Carex albicans var. albicans | Carex varia Muhl. ex Willd., non Host | CAVA5 |
| Carex albicans var. australis | Carex emmonsii Dewey ex Torr. var. australis (Bailey) J. Rettig | CAEMA |
| Carex albicans var. australis | Carex physorhyncha Liebm. ex Steud. | CAPH4 |
| Carex albicans var. australis | Carex varia Muhl. ex Willd. var. australis Bailey | CAVAA |
| Carex albicans var. emmonsii | Carex emmonsii Dewey ex Torr. | CAEM |
| Carex albursina | Carex laxiflora Lam. var. latifolia Boott | CALAL9 |
| Carex alligata | Carex alligata Boott var. degeneri R.W. Krauss | CAALD |
| Carex alligata | Carex pluvia R.W. Krauss | CAPL10 |
| Carex alligata | Carex pluvia R.W. Krauss var. koolauensis R.W. Krauss | CAPLK |
| Carex amphibola | Carex grisea Wahlenb. var. amphibola (Steud.) K?kenth. | CAGRA |
| Carex angustata | Carex egregia Mackenzie | CAEG2 |
| Carex angustata | Carex eurycarpa Holm | CAEU2 |
| Carex angustata | Carex eurycarpa Holm var. attenuata K?kenth. | CAEUA |
| Carex angustata | Carex oxycarpa Holm | CAOX4 |
| Carex angustata | Carex striata Michx. var. erecta (Dewey) C.F. Reed | CASTE6 |
| Carex annectens | Carex annectens (Bickn.) Bickn. var. xanthocarpa (K?kenth.) Wieg. | CAANX |
| Carex annectens | Carex brachyglossa Mackenzie | CABR28 |
| Carex annectens | Carex setacea Dewey var. ambigua (Barratt) Fern. | CASEA6 |
| Carex aperta | Carex accedens Holm | CAAC9 |
| Carex aperta | Carex acutina Bailey var. tenuior Bailey | CAACT |
| Carex aperta | Carex stylosa C.A. Mey. var. virens Bailey | CASTV |
| Carex aperta | Carex turgidula Bailey | CATU9 |
| Carex aquatilis var. aquatilis | Carex acutinella Mackenzie | CAAC10 |
| Carex aquatilis var. aquatilis | Carex aquatilis Wahlenb. ssp. altior (Rydb.) Hult | CAAQA4 |
| Carex aquatilis var. aquatilis | Carex aquatilis Wahlenb. var. altior (Rydb.) Fern. | CAAQA5 |
| Carex aquatilis var. aquatilis | Carex aquatilis Wahlenb. var. substricta K?kenth. | CAAQS2 |
| Carex aquatilis var. aquatilis | Carex substricta (K?kenth.) Mackenzie | CASU24 |
| Carex aquatilis var. aquatilis | Carex suksdorfii K?kenth. | CASU23 |
| Carex aquatilis var. dives | Carex aquatilis Wahlenb. var. sitchensis (Prescott ex Bong.) L. Kelso | CAAQS4 |
| Carex aquatilis var. dives | Carex howellii Bailey | CAHO14 |
| Carex aquatilis var. dives | Carex panda C.B. Clarke | CAPA55 |
| Carex aquatilis var. dives | Carex sitchensis Prescott ex Bong. | CASI3 |
| Carex aquatilis var. stans | Carex aquatilis Wahlenb. ssp. stans (Drej.) Hult | CAAQS3 |
| Carex aquatilis var. stans | Carex stans Drej. | CAST39 |
| Carex arctiformis | Carex canescens L. ssp. arctiformis (Mackenzie) Calder & Taylor | CACAA4 |
| Carex argyrantha | Carex foenea Willd. var. perplexa Bailey | CAFOP |
| Carex atlantica ssp. atlantica | Carex atlantica Bailey var. incomperta (Bickn.) F.J. Herm. | CAATI |
| Carex atlantica ssp. atlantica | Carex echinata Murr. var. conferta (Chapman) Bailey | CAECC |
| Carex atlantica ssp. atlantica | Carex incomperta Bickn. | CAIN31 |
| Carex atlantica ssp. capillacea | Carex atlantica Bailey var. capillacea (Bailey) Cronq. | CAATC5 |
| Carex atlantica ssp. capillacea | Carex atlantica Bailey var. capillaceae (Bailey) Cronq. [orthographic error] | CAATC4 |
| Carex atlantica ssp. capillacea | Carex delicatula Bickn. | CADE21 |
| Carex atlantica ssp. capillacea | Carex howei Mackenzie | CAHO10 |
| Carex atlantica ssp. capillacea | Carex howei Mackenzie var. capillacea (Bailey) Fern. | CAHOC |
| Carex atlantica ssp. capillacea | Carex interior Bailey var. capillacea Bailey | CAINC2 |
| Carex atlantica ssp. capillacea | Carex mohriana Mackenzie | CAMO10 |
| Carex atratiformis | Carex atrata L. p.p. | CAAT5 |
| Carex atrosquama | Carex apoda Clokey | CAAP6 |
| Carex atrosquama | Carex atrata L. ssp. atrosquama (Mackenzie) Hult | CAATA4 |
| Carex atrosquama | Carex atrata L. var. atrosquama (Mackenzie) Cronq. | CAATA5 |
| Carex austrina | Carex muehlenbergii Schkuhr ex Willd. var. australis Olney ex Bailey | CAMUA |
| Carex austrina | Carex muehlenbergii Schkuhr ex Willd. var. austrina Small | CAMUA4 |
| Carex austroalpina | Carex refracta auct. | CARE19 |
| Carex backii | Carex backii Boott var. subrostrata (Bates) Dorn | CABAS2 |
| Carex backii | Carex durifolia Bailey | CADU10 |
| Carex backii | Carex durifolia Bailey var. subrostrata Bates | CADUS |
| Carex bella | Carex uncompahgre L. Kelso | CAUN8 |
| Carex bicknellii | Carex bicknellii Britt. var. bicknellii Britt. [superfluous autonym] | CABIB |
| Carex bicknellii | Carex brevior (Dewey) Mackenzie var. crawei (W. Boott) Boivin | CABRC2 |
| Carex bigelowii | Carex bigelowii Torr. ex Schwein. ssp. hyperborea (Drej.) B?cher | CABIH2 |
| Carex bigelowii | Carex consimilis Holm | CACO51 |
| Carex blanda | Carex laxiflora Lam. var. blanda (Dewey) Boott | CALAB4 |
| Carex bolanderi | Carex deweyana Schwein. var. bolanderi (Olney) W. Boott | CADEB |
| Carex brevicaulis | Carex deflexa Hornem. var. brevicaulis (Mackenzie) Boivin | CADEB2 |
| Carex brevior | Carex festucacea Schkuhr ex Willd. var. brevior (Dewey) Fern. | CAFEB |
| Carex breweri | Carex breweri Boott var. breweri Boott [superfluous autonym] | CABRB5 |
| Carex bromoides ssp. bromoides | Carex bromoides Schkuhr ex Willd. var. bromoides | CABRB2 |
| Carex bromoides ssp. montana | Carex bromoides Schkuhr ex Willd. var. montana Naczi | CABRM |
| Carex brunnescens ssp. sphaerostachya | Carex brunnescens (Pers.) Poir. var. sphaerostachya (Tuckerman) K?kenth. | CABRS2 |
| Carex bulbostylis | Carex amphibola Steud. var. globosa (Bailey) Bailey | CAAMG |
| Carex bushii | Carex caroliniana Schwein. var. cuspidata (Dewey) Shinners | CACAC12 |
| Carex canescens ssp. canescens | Carex curta Goodenough | CACU9 |
| Carex canescens ssp. disjuncta | Carex canescens L. var. disjuncta Fern. | CACAD |
| Carex capillaris | Carex boecheriana A.& D. L?ve & Raymond | CABO21 |
| Carex capillaris | Carex capillaris L. ssp. chlorostachys (Stev.) A.& D. L?ve & Raymond | CACAC13 |
| Carex capillaris | Carex capillaris L. ssp. robustior (Drej. ex Lange) B?cher | CACAR4 |
| Carex capillaris | Carex capillaris L. var. elongata Olney ex Fern. | CACAE |
| Carex capillaris | Carex capillaris L. var. fuscidula (Krecz.) A.& D. L?ve | CACAF |
| Carex capillaris | Carex capillaris L. var. major Blytt | CACAM2 |
| Carex capitata ssp. arctogena | Carex arctogena H. Sm. | CAAR15 |
| Carex capitata ssp. arctogena | Carex capitata L. var. arctogena (H. Sm.) Hult | CACAA5 |
| Carex cephaloidea | Carex sparganioides Muhl. ex Willd. var. cephaloidea (Dewey) Carey | CASPC |
| Carex communis var. amplisquama | Carex amplisquama F.J. Herm. | CAAM12 |
| Carex conoidea | Carex katahdinensis Fern. | CAKA |
| Carex crawfordii | Carex crawfordii Fern. var. vigens Fern. | CACRV |
| Carex crinita var. crinita | Carex crinita Lam. var. minor Boott | CACRM3 |
| Carex crinita var. crinita | Carex crinita Lam. var. simulans Fern. | CACRS |
| Carex crus-corvi | Carex bayardii Fern. | CABA10 |
| Carex cryptolepis | Carex flava L. var. fertilis auct. non Peck [misapplied] | CAFLF4 |
| Carex curatorum | Carex haysii Welsh | CAHA36 |
| Carex curatorum | Carex scirpoidea Michx. var. curatorum (Stacey) Cronq. | CASCC2 |
| Carex cusickii | Carex obovoidea Cronq. | CAOB7 |
| Carex debilis var. pubera | Carex allegheniensis Mackenzie | CAAL20 |
| Carex debilis var. pubera | Carex debilis Michx. ssp. pubera (Gray) A.& D. L?ve | CADEP2 |
| Carex debilis var. rudgei | Carex debilis Michx. ssp. rudgei (Bailey) A.& D. L?ve | CADER3 |
| Carex debilis var. rudgei | Carex flexuosa Muhl. ex Willd. | CAFL20 |
| Carex densa | Carex breviligulata Mackenzie | CABR9 |
| Carex divulsa ssp. divulsa | Carex virens sensu Mackenzie, non Lam. | CAVI7 |
| Carex divulsa ssp. leersii | Carex polyphylla Kar. & Kir. | CAPO18 |
| Carex duriuscula | Carex eleocharis Bailey | CAEL2 |
| Carex duriuscula | Carex stenophylla auct. non Wahlenb. [misapplied] | CAST40 |
| Carex duriuscula | Carex stenophylla Wahlenb. ssp. eleocharis (Bailey) Hult | CASTE3 |
| Carex duriuscula | Carex stenophylla Wahlenb. var. enervis K?kenth. | CASTE5 |
| Carex echinata ssp. echinata | Carex angustior Mackenzie | CAAN23 |
| Carex echinata ssp. echinata | Carex angustior Mackenzie var. gracilenta Clausen & H.A. Wahl | CAANG2 |
| Carex echinata ssp. echinata | Carex cephalantha (Bailey) Bickn. | CACE5 |
| Carex echinata ssp. echinata | Carex echinata Murr. var. angustata (Carey) Bailey | CAECA |
| Carex echinata ssp. echinata | Carex hawaiiensis St. John | CAHA30 |
| Carex echinata ssp. echinata | Carex josselynii (Fern.) Mackenzie ex Pease | CAJO4 |
| Carex echinata ssp. echinata | Carex laricina Mackenzie ex Bright | CALA54 |
| Carex echinata ssp. echinata | Carex leersii Willd. | CALE33 |
| Carex echinata ssp. echinata | Carex muricata L. var. angustata (Carey) Carey ex Gleason | CAMUA3 |
| Carex echinata ssp. echinata | Carex muricata L. var. cephalantha (Bailey) Wieg. & Eames | CAMUC2 |
| Carex echinata ssp. echinata | Carex muricata L. var. laricina (Mackenzie ex Bright) Gleason | CAMUL |
| Carex echinata ssp. echinata | Carex ormantha (Fern.) Mackenzie | CAOR2 |
| Carex echinata ssp. echinata | Carex phyllomanica W. Boott var. angustata (Carey) Boivin | CAPHA |
| Carex echinata ssp. echinata | Carex phyllomanica W. Boott var. ormantha (Fern.) Boivin | CAPHO |
| Carex echinata ssp. echinata | Carex svensonis Skottsberg | CASV |
| Carex echinata ssp. phyllomanica | Carex echinata Murr. var. phyllomanica (W. Boott) Boivin | CAECP2 |
| Carex echinata ssp. phyllomanica | Carex phyllomanica W. Boott | CAPH6 |
| Carex eleusinoides | Carex kokrinensis Porsild | CAKO5 |
| Carex emoryi | Carex stricta Lam. var. elongata (Boeckl.) Gleason | CASTE4 |
| Carex engelmannii | Carex breweri Boott var. paddoensis (Suksdorf) Cronq. | CABRP3 |
| Carex exserta | Carex filifolia Nutt. var. erostrata K?kenth. | CAFIE |
| Carex exsiccata | Carex vesicaria L. var. major Boott | CAVEM3 |
| Carex feta | Carex straminea Willd. ex Schkuhr var. mixta Bailey | CASTM2 |
| Carex filifolia | Carex elyniformis Porsild | CAEL16 |
| Carex filifolia | Carex filifolia Nutt. var. filifolia Nutt. [superfluous autonym] | CAFIF3 |
| Carex flacca | Carex glauca Scop. | CAGL19 |
| Carex flava | Carex flava L. var. fertilis Peck | CAFLF5 |
| Carex flava | Carex flava L. var. gaspensis Fern. | CAFLG3 |
| Carex flava | Carex flava L. var. graminis Bailey | CAFLG4 |
| Carex flava | Carex flava L. var. laxior (K?kenth.) Gleason | CAFLL2 |
| Carex flava | Carex flava L. var. rectirostra Gaudin | CAFLR2 |
| Carex flava | Carex nevadensis Boiss. & Reut. ssp. flavella (Krecz.) Janchen | CANEF |
| Carex floridana | Carex nigromarginata Schwein. var. floridana (Schwein.) K?kenth. | CANIF |
| Carex garberi | Carex garberi Fern. ssp. bifaria (Fern.) Hult | CAGAB |
| Carex garberi | Carex garberi Fern. var. bifaria Fern. | CAGAB2 |
| Carex glareosa ssp. glareosa var. amphigena | Carex amphigena (Fern.) Mackenzie | CAAM16 |
| Carex glareosa ssp. glareosa var. amphigena | Carex bipartita All. var. amphigena (Fern.) Polunin | CABIA |
| Carex glareosa ssp. glareosa var. glareosa | Carex bipartita All. var. glareosa (Schkuhr ex Wahlenb.) Polunin | CABIG |
| Carex glareosa ssp. pribylovensis | Carex pribylovensis Macoun | CAPR16 |
| Carex glaucodea | Carex flaccosperma Dewey var. glaucodea (Tuckerman ex Olney) K?kenth. | CAFLG5 |
| Carex gracilescens | Carex laxiflora Lam. var. gracillima (Boott) Boott ex B.L. Robins. & Fern. | CALAG3 |
| Carex gracillima | Carex gracillima Schwein. var. macerrima Fern. & Wieg. | CAGRM |
| Carex granularis | Carex granularis Muhl. ex Willd. var. granularis Muhl. ex Willd. [superfluous autonym] | CAGRG |
| Carex granularis | Carex granularis Muhl. ex Willd. var. haleana (Olney) Porter | CAGRH |
| Carex granularis | Carex granularis Muhl. ex Willd. var. recta Dewey | CAGRR |
| Carex granularis | Carex haleana Olney | CAHA17 |
| Carex granularis | Carex rectior Mackenzie | CARE11 |
| Carex granularis | Carex shriveri Britt. | CASH6 |
| Carex gravida var. lunelliana | Carex lunelliana Mackenzie | CALU15 |
| Carex grayi | Carex asa-grayi Bailey | CAAS8 |
| Carex grayi | Carex grayi Carey var. hispidula Gray | CAGRH2 |
| Carex grisea | Carex amphibola Steud. var. turgida Fern. | CAAMT |
| Carex gynandra | Carex crinita Lam. var. gynandra (Schwein.) Schwein. & Torr. | CACRG2 |
| Carex gynocrates | Carex dioica L. ssp. gynocrates (Wormsk. ex Drej.) Hult | CADIG |
| Carex gynocrates | Carex dioica L. var. gynocrates (Wormsk. ex Drej.) Ostenf. | CADIG2 |
| Carex gynocrates | Carex parallela auct. non (Laestad.) Sommerf. [misapplied] | CAPA57 |
| Carex halliana | Carex oregonensis Olney ex Bailey | CAOR13 |
| Carex hallii | Carex parryana Dewey ssp. hallii (Olney) D.F. Murr. | CAPAH3 |
| Carex hallii | Carex parryana Dewey var. hallii (Olney) K?kenth. | CAPAH4 |
| Carex hallii | Carex parryana Dewey var. unica Bailey | CAPAU |
| Carex harfordii | Carex montereyensis Mackenzie | CAMO7 |
| Carex haydeniana | Carex festiva Dewey var. decumbens Holm | CAFED |
| Carex haydeniana | Carex macloviana d'Urv. ssp. haydeniana (Olney) Taylor & MacBryde | CAMAH |
| Carex haydeniana | Carex nubicola Mackenzie | CANU14 |
| Carex haydenii | Carex rousseaui Raymond | CARO24 |
| Carex haydenii | Carex stricta Lam. var. decora Bailey | CASTD |
| Carex heleonastes ssp. heleonastes | Carex curta Goodenough var. robustior (K?kenth.) Boivin | CACUR |
| Carex heleonastes ssp. neurochlaena | Carex neurochlaena Holm | CANE10 |
| Carex heteroneura var. brevisquama | Carex atrata auct. p.p., non L. | CAAT13 |
| Carex heteroneura var. chalciolepis | Carex atrata L. var. chalciolepis (Holm) K?kenth. | CAATC2 |
| Carex heteroneura var. chalciolepis | Carex chalciolepis Holm | CACH21 |
| Carex heteroneura var. epapillosa | Carex atrata auct. p.p., non L. | CAAT13 |
| Carex heteroneura var. epapillosa | Carex atrata L. var. erecta W. Boott | CAATE |
| Carex heteroneura var. epapillosa | Carex epapillosa Mackenzie | CAEP3 |
| Carex heterostachya | Carex ?fulleri Ahles | CAFU2 |
| Carex hirsutella | Carex complanata Torr. & Hook. var. hirsuta (Willd.) Gleason | CACOH |
| Carex hirsutella | Carex triceps auct. non Michx. [misapplied] | CATR16 |
| Carex hormathodes | Carex straminea Willd. ex Schkuhr var. invisa W. Boott | CASTI4 |
| Carex houghtoniana | Carex houghtonii Torr. | CAHO15 |
| Carex hyalinolepis | Carex impressa (S.H. Wright) Mackenzie | CAIM3 |
| Carex hyalinolepis | Carex lacustris Willd. var. laxiflora Dewey | CALAL8 |
| Carex hyalinolepis | Carex riparia auct. non M.A. Curtis [misapplied] | CARI7 |
| Carex hyalinolepis | Carex riparia M.A. Curtis var. impressa S.H. Wright | CARII |
| Carex idahoa | Carex parryana Dewey ssp. idahoa (Bailey) D.F. Murr. | CAPAI3 |
| Carex incurviformis var. incurviformis | Carex maritima Gunn. var. incurviformis (Mackenzie) Boivin | CAMAI3 |
| Carex incurviformis var. incurviformis | Carex maritima Gunn. var. setina (Christ) Fern. | CAMAS5 |
| Carex inops ssp. heliophila | Carex erxlebeniana L. Kelso | CAER5 |
| Carex inops ssp. heliophila | Carex heliophila Mackenzie | CAHE5 |
| Carex inops ssp. heliophila | Carex pensylvanica Lam. ssp. heliophila (Mackenzie) W.A. Weber | CAPEH |
| Carex inops ssp. heliophila | Carex pensylvanica Lam. var. digyna Boeckl. | CAPED |
| Carex interior | Carex interior Bailey ssp. charlestonensis Clokey | CAINC3 |
| Carex interior | Carex interior Bailey var. keweenawensis F.J. Herm. | CAINK |
| Carex interrupta | Carex interrupta Boeckl. var. distenta K?kenth. | CAIND2 |
| Carex intumescens | Carex intumescens Rudge var. fernaldii Bailey | CAINF |
| Carex jamesii | Carex steudelii Kunth | CAST61 |
| Carex krausei | Carex capillaris L. ssp. krausei (Boeckl.) B?cher | CACAK |
| Carex krausei | Carex capillaris L. ssp. porsildiana (Polunin) B?cher | CACAP3 |
| Carex krausei | Carex capillaris L. var. krausei (Boeckl.) Crantz | CACAK2 |
| Carex krausei | Carex krausei Boeckl. ssp. porsildiana (Polunin) A.& D. L?ve & Raymond | CAKRP |
| Carex lachenalii | Carex bipartita All. var. austromontana F.J. Herm. | CABIA2 |
| Carex lachenalii | Carex bipartita auct. non All. [misapplied] | CABI20 |
| Carex lacustris | Carex riparia M.A. Curtis var. lacustris (Willd.) K?kenth. | CARIL |
| Carex laeviculmis | Carex deweyana Schwein. var. sparsiflora Bailey | CADES3 |
| Carex laevivaginata | Carex stipata Muhl. ex Willd. var. laevivaginata K?kenth. | CASTL |
| Carex lapponica | Carex canescens L. var. subloliacea (Laestad.) Hartman | CACAS2 |
| Carex lasiocarpa var. americana | Carex lanuginosa Michx. var. americana (Fern.) Boivin | CALAA3 |
| Carex lasiocarpa var. americana | Carex lasiocarpa Ehrh. ssp. americana (Fern.) Love & Bernard | CALAA5 |
| Carex laxiculmis var. copulata | Carex ?copulata (Bailey) Mackenzie | CACO53 |
| Carex laxiculmis var. laxiculmis | Carex absconditiformis Fern. | CAAB15 |
| Carex laxiflora var. laxiflora | Carex anceps Muhl. | CAAN17 |
| Carex laxiflora var. laxiflora | Carex laxiflora Lam. var. patulifolia (Dewey) Carey | CALAP2 |
| Carex leavenworthii | Carex cephalophora Muhl. ex Willd. var. angustifolia Boott | CACEA |
| Carex leavenworthii | Carex cephalophora Muhl. ex Willd. var. leavenworthii (Dewey) K?kenth. | CACEL |
| Carex lenticularis var. dolia | Carex enanderi Holm | CAEN2 |
| Carex lenticularis var. dolia | Carex eurystachya F.J. Herm. | CAEU3 |
| Carex lenticularis var. dolia | Carex plectocarpa F.J. Herm. | CAPL9 |
| Carex lenticularis var. impressa | Carex limnaea Holm | CALI12 |
| Carex lenticularis var. impressa | Carex paucicostata Mackenzie | CAPA20 |
| Carex lenticularis var. lenticularis | Carex lenticularis Michx. var. albimontana Dewey | CALEA |
| Carex lenticularis var. lenticularis | Carex lenticularis Michx. var. blakei Dewey | CALEB |
| Carex lenticularis var. lenticularis | Carex lenticularis Michx. var. eucycla Fern. | CALEE |
| Carex lenticularis var. lenticularis | Carex lenticularis Michx. var. merens Howe | CALEM |
| Carex lenticularis var. limnophila | Carex hindsii C.B. Clarke | CAHI4 |
| Carex lenticularis var. lipocarpa | Carex kelloggii W. Boott | CAKE2 |
| Carex lenticularis var. lipocarpa | Carex lenticularis Michx. var. pallida (W. Boott) Dorn | CALEP4 |
| Carex leptalea ssp. harperi | Carex harperi Fern. | CAHA19 |
| Carex leptalea ssp. harperi | Carex leptalea Wahlenb. var. harperi (Fern.) Weatherby & Grisc. | CALEH3 |
| Carex leptalea ssp. leptalea | Carex leptalea Wahlenb. var. tayloris Boivin | CALET |
| Carex leptalea ssp. pacifica | Carex jimcalderi Boivin | CAJI |
| Carex leptonervia | Carex laxiflora Lam. var. varians Bailey | CALAV |
| Carex leptopoda | Carex deweyana Schwein. ssp. leptopoda (Mackenzie) Calder & Taylor | CADEL |
| Carex leptopoda | Carex deweyana Schwein. var. leptopoda (Mackenzie) Boivin | CADEL2 |
| Carex liparocarpos ssp. bordzilowskii | Carex bordzilowskii V. I. Krecz. | CABO17 |
| Carex livida var. radicaulis | Carex livida (Wahlenb.) Willd. var. grayana (Dewey) Fern. | CALIG |
| Carex lonchocarpa | Carex folliculata L. var. australis Bailey | CAFOA |
| Carex lonchocarpa | Carex smalliana Mackenzie | CASM2 |
| Carex lucorum var. lucorum | Carex michiganensis Dewey | CAMI35 |
| Carex lucorum var. lucorum | Carex pensylvanica Lam. var. distans Peck | CAPED2 |
| Carex lucorum var. lucorum | Carex pensylvanica Lam. var. lucorum (Willd. ex Link) Fern. | CAPEL |
| Carex lucorum var. lucorum | Carex pensylvanica Lam. var. separans Peck | CAPES2 |
| Carex lupulina | Carex ?macounii Dewey | CAMA18 |
| Carex lupulina | Carex lupulina Muhl. ex Willd. var. pedunculata Gray | CALUP |
| Carex luzulina var. ablata | Carex ablata Bailey | CAAB8 |
| Carex lyngbyei | Carex cryptocarpa C.A. Mey. | CACR15 |
| Carex lyngbyei | Carex cryptochlaena Holm | CACR16 |
| Carex lyngbyei | Carex lyngbyei Hornem. var. robusta (Bailey) Cronq. | CALYR |
| Carex macloviana | Carex festiva Dewey | CAFE6 |
| Carex macloviana | Carex incondita F.J. Herm. | CAIN33 |
| Carex macloviana | Carex soperi Raup | CASO5 |
| Carex magellanica ssp. irrigua | Carex magellanica Lam. var. irrigua (Wahlenb.) B.S.P. | CAMAI4 |
| Carex magellanica ssp. irrigua | Carex paupercula Michx. | CAPA22 |
| Carex magellanica ssp. irrigua | Carex paupercula Michx. var. brevisquama Fern. | CAPAB3 |
| Carex magellanica ssp. irrigua | Carex paupercula Michx. var. irrigua (Wahlenb.) Fern. | CAPAI4 |
| Carex magellanica ssp. irrigua | Carex paupercula Michx. var. pallens Fern. | CAPAP9 |
| Carex marina ssp. marina | Carex amblyorhyncha Krecz. | CAAM7 |
| Carex mariposana | Carex paucifructus Mackenzie | CAPA21 |
| Carex maritima | Carex incurva Lightf. | CAIN35 |
| Carex meadii | Carex tetanica Schkuhr var. meadii (Dewey) Bailey | CATEM |
| Carex melanostachya | Carex nutans Host | CANU15 |
| Carex membranacea | Carex membranopacta Bailey | CAME25 |
| Carex mendocinensis | Carex debiliformis Mackenzie | CADE20 |
| Carex mesochorea | Carex cephalophora Muhl. ex Willd. var. mesochorea (Mackenzie) Gleason | CACEM |
| Carex michauxiana | Carex abacta Bailey | CAAB10 |
| Carex microchaeta ssp. nesophila | Carex nesophila Holm | CANE4 |
| Carex microptera | Carex festivella Mackenzie | CAFE2 |
| Carex microptera | Carex limnophila F.J. Herm. | CALI6 |
| Carex microptera | Carex macloviana d'Urv. ssp. festivella (Mackenzie) A.& D. L?ve | CAMAF |
| Carex microptera | Carex macloviana d'Urv. var. microptera (Mackenzie) Boivin | CAMAM13 |
| Carex microptera | Carex microptera Mackenzie var. crassinervia F.J. Herm. | CAMIC |
| Carex microptera | Carex microptera Mackenzie var. limnophila (F.J. Herm.) Dorn | CAMIL |
| Carex misandra | Carex fuliginosa Schkuhr ssp. misandra (R. Br.) Nyman | CAFUM2 |
| Carex mitchelliana | Carex crinita Lam. var. mitchelliana (M.A. Curtis) Gleason | CACRM2 |
| Carex muehlenbergii var. enervis | Carex plana Mackenzie | CAPL12 |
| Carex multicostata | Carex pachycarpa Mackenzie | CAPA58 |
| Carex muricata | Carex pairaei F.W. Schultz | CAPA15 |
| Carex muricata | Carex stellulata auct. non Goodenough [misapplied] | CAST26 |
| Carex nardina var. hepburnii | Carex hepburnii Boott | CAHE16 |
| Carex nardina var. hepburnii | Carex nardina Fries ssp. hepburnii (Boott) A.& D. L?ve & Kapoor | CANAH2 |
| Carex nelsonii | Carex estesiana L. Kelso | CAES2 |
| Carex nigra | Carex acuta auct. non L. [misapplied] | CAAC5 |
| Carex nigra | Carex goodenowii J. Gay | CAGO2 |
| Carex nigra | Carex nigra (L.) Reichard var. strictiformis (Bailey) Fern. | CANIS |
| Carex nigra | Carex vulgaris Fr. | CAVU6 |
| Carex norvegica ssp. inferalpina | Carex angarae Steud. | CAAN18 |
| Carex norvegica ssp. inferalpina | Carex media R. Br. | CAME9 |
| Carex norvegica ssp. inferalpina | Carex norvegica Retz. var. inferalpina (Wahlenb.) Boivin | CANOI3 |
| Carex norvegica ssp. inferalpina | Carex vahlii Schkuhr var. inferalpina Wahlenb. | CAVAI |
| Carex norvegica ssp. norvegica | Carex halleri Gunn. | CAHA40 |
| Carex norvegica ssp. norvegica | Carex vahlii Schkuhr | CAVA16 |
| Carex norvegica ssp. stevenii | Carex media R. Br. var. stevenii (Holm) Fern. | CAMES |
| Carex norvegica ssp. stevenii | Carex norvegica Retz. var. stevenii (Holm) Dorn | CANOS2 |
| Carex norvegica ssp. stevenii | Carex stevenii Holm | CAST22 |
| Carex nova | Carex elbertiana L. Kelso | CAEL18 |
| Carex nudata | Carex hallii Bailey, non Olney | CAHA20 |
| Carex nudata | Carex suborbiculata Mackenzie | CASU21 |
| Carex obnupta | Carex magnifica Dewey ex Piper | CAMA46 |
| Carex occidentalis | Carex neomexicana Mackenzie | CANE20 |
| Carex oklahomensis | Carex stipata Muhl. ex Willd. var. oklahomensis (Mackenzie) Gleason | CASTO |
| Carex opaca | Carex bicknellii Britt. var. opaca F.J. Herm. | CABIO |
| Carex ormostachya | Carex laxiflora Lam. var. ormostachya (Wieg.) Gleason | CALAO |
| Carex ovalis | Carex leporina auct. non L. [misapplied] | CALE23 |
| Carex ovalis | Carex tracyi auct. non Mackenzie [misapplied] | CATR17 |
| Carex pachystachya | Carex festiva Dewey var. gracilis Olney | CAFEG |
| Carex pachystachya | Carex festiva Dewey var. pachystachya (Cham. ex Steud.) Bailey | CAFEP |
| Carex pachystachya | Carex macloviana d'Urv. ssp. pachystachya (Cham. ex Steud.) Hult | CAMAP4 |
| Carex pachystachya | Carex macloviana d'Urv. var. pachystachya (Cham. ex Steud.) K?kenth. | CAMAP5 |
| Carex pachystachya | Carex multimoda Bailey | CAMU19 |
| Carex pachystachya | Carex pachystachya Cham. ex Steud. var. gracilis (Olney) Mackenzie | CAPAG |
| Carex pachystachya | Carex pachystachya Cham. ex Steud. var. monds-coulteri L. Kelso | CAPAM2 |
| Carex pachystachya | Carex pyrophila Gandog. | CAPY6 |
| Carex paleacea | Carex paleacea Schreb. ex Wahlenb. var. transatlantica Fern. | CAPAT |
| Carex pallescens | Carex pallescens L. var. neogaea Fern. | CAPAN2 |
| Carex panicea | Carex panicea L. var. microcarpa Sonder | CAPAM3 |
| Carex pansa | Carex arenicola F. Schmidt | CAAR32 |
| Carex pansa | Carex arenicola F. Schmidt ssp. pansa (Bailey) T. Koyama & Calder | CAARP |
| Carex parryana var. brevisquama | Carex aboriginum auct. non M.E. Jones, 1910 [misapplied] | CAAB4 |
| Carex paysonis | Carex podocarpa R. Br. var. paysonis (Clokey) Boivin | CAPOP3 |
| Carex paysonis | Carex tolmiei auct. non Boott [misapplied] | CATO17 |
| Carex peckii | Carex albicans auct. non Willd. ex Spreng. [misapplied] | CAAL23 |
| Carex peckii | Carex nigromarginata Schwein. var. elliptica (Boott) Gleason | CANIE2 |
| Carex peckii | Carex nigromarginata Schwein. var. minor (Boott) Gleason | CANIM3 |
| Carex pellita | Carex lanuginosa auct. non Michx. [misapplied] | CALA30 |
| Carex pellita | Carex lasiocarpa Ehrh. var. latifolia (Boeckl.) Gilly | CALAL7 |
| Carex pelocarpa | Carex nova Bailey var. pelocarpa (F.J. Herm.) Dorn | CANOP |
| Carex pensylvanica | Carex marginata Willd. | CAMA47 |
| Carex pensylvanica | Carex pensylvanica Lam. var. glumabunda Peck | CAPEG |
| Carex pensylvanica | Carex pensylvanica Lam. var. marginata (Willd.) Dewey | CAPEM2 |
| Carex pensylvanica | Carex pensylvanica Lam. var. vespertina Bailey | CAPEV |
| Carex pensylvanica | Carex stolonifera Schwein. | CAST24 |
| Carex petricosa | Carex franklinii Boott | CAFR4 |
| Carex petricosa | Carex macrogyna Turcz. ex Steud. | CAMA40 |
| Carex petricosa | Carex petricosa Dewey var. distichiflora (Boivin) Boivin | CAPED3 |
| Carex petricosa | Carex petricosa Dewey var. franklinii (Boott) Boivin | CAPEF |
| Carex planispicata | Carex amphibola Steud. var. rigida (Bailey) Fern. | CAAMR |
| Carex pluriflora | Carex rariflora (Wahlenb.) Sm. var. pluriflora (Hult?n) Boivin | CARAP |
| Carex pluriflora | Carex stygia Holm, non Fries p.p | CAST38 |
| Carex podocarpa | Carex behringensis C.B. Clarke | CABE9 |
| Carex podocarpa | Carex montanensis Bailey | CAMO23 |
| Carex podocarpa | Carex venustula Holm | CAVE14 |
| Carex praeceptorum | Carex praeceptorium Mackenzie [orthographic variant] | CAPR4 |
| Carex praegracilis | Carex camporum Mackenzie | CACA50 |
| Carex praticola | Carex praticola Rydb. var. subcoriacea F.J. Herm. | CAPRS |
| Carex purpurifera | Carex laxiflora Lam. var. purpurifera (Mackenzie) Gleason | CALAP3 |
| Carex pyrenaica ssp. micropoda | Carex jacobi-peteri Hult | CAJA |
| Carex pyrenaica ssp. micropoda | Carex micropoda C.A. Mey. | CAMI16 |
| Carex pyrenaica ssp. pyrenaica | Carex crandallii Gandog. | CACR17 |
| Carex radiata | Carex radiata (Wahlenb.) Small var. staminata Peck ex Howe | CARAS |
| Carex radiata | Carex rosea Schkuhr ex Willd. var. minor Boott | CAROM |
| Carex radiata | Carex rosea Schkuhr ex Willd. var. radiata (Wahlenb.) Dewey | CAROR2 |
| Carex radiata | Carex sylvicola J. Webber & P.W. Ball | CASY4 |
| Carex ramenskii | Carex ramenskii Komarov var. caudata Hult | CARAC |
| Carex rariflora var. rariflora | Carex stygia Holm, non Fries p.p | CAST38 |
| Carex raymondii | Carex atratiformis Britt. ssp. raymondii (Calder) Porsild | CAATR |
| Carex raynoldsii | Carex lyallii Boott | CALY6 |
| Carex recta | Carex halophila F. Nyl. | CAHA18 |
| Carex recta | Carex salina Wahlenb. var. kattegatensis (Fries) Almquist | CASAK |
| Carex rosea | Carex convoluta Mackenzie | CACO58 |
| Carex rosea | Carex flaccidula Steud. | CAFL9 |
| Carex rosea | Carex rosea Schkuhr ex Willd. var. pusilla Peck & Howe | CAROP2 |
| Carex rossii | Carex brevipes W. Boott | CABR11 |
| Carex rossii | Carex deflexa Hornem. var. rossii (Boott) Bailey | CADER2 |
| Carex rossii | Carex diversistylis Roach | CADI23 |
| Carex rostrata | Carex rostrata Stokes var. ambigens Fern. | CAROA2 |
| Carex rotundata | Carex melozitnensis Porsild | CAME11 |
| Carex rupestris var. drummondiana | Carex drummondiana Dewey | CADR5 |
| Carex rupestris var. drummondiana | Carex rupestris All. ssp. drummondiana (Dewey) Holub | CARUD2 |
| Carex ruthii | Carex muricata L. var. ruthii (Mackenzie) Gleason | CAMUR2 |
| Carex sabulosa | Carex leiophylla Mackenzie | CALE37 |
| Carex sabulosa | Carex sabulosa Turcz. ex Kunth ssp. leiophylla (Mackenzie) Porsild | CASAL |
| Carex sartwelliana | Carex yosemitana Bailey | CAYO |
| Carex saxatilis | Carex miliaris Michx. | CAMI29 |
| Carex saxatilis | Carex physocarpa J.& K. Presl | CAPH7 |
| Carex saxatilis | Carex rhomalea (Fern.) Mackenzie | CARH5 |
| Carex saxatilis | Carex rotundata Wahlenb. var. compacta (R.Br. ex Dewey) Boivin | CAROC2 |
| Carex saxatilis | Carex saxatilis L. ssp. laxa (Trautv.) Kalela | CASAL2 |
| Carex saxatilis | Carex saxatilis L. var. miliaris (Michx.) Bailey | CASAM2 |
| Carex saxatilis | Carex saxatilis L. var. rhomalea Fern. | CASAR |
| Carex saximontana | Carex backii Boott var. saximontana (Mackenzie) Boivin | CABAS |
| Carex scabriuscula | Carex gigas (Holm) Mackenzie | CAGI5 |
| Carex scirpoidea ssp. convoluta | Carex scirpoidea Michx. var. convoluta K?kenth. | CASCC4 |
| Carex scirpoidea ssp. pseudoscirpoidea | Carex pseudoscirpoidea Rydb. | CAPS2 |
| Carex scirpoidea ssp. pseudoscirpoidea | Carex scirpoidea Michx. var. pseudoscirpoidea (Rydb.) Cronq. | CASCP2 |
| Carex scirpoidea ssp. scirpoidea | Carex athabascensis F.J. Herm. | CAAT12 |
| Carex scirpoidea ssp. scirpoidea | Carex scirpiformis Mackenzie | CASC15 |
| Carex scirpoidea ssp. scirpoidea | Carex scirpoidea Michx. var. scirpiformis (Mackenzie) O'Neill & Duman | CASCS5 |
| Carex scirpoidea ssp. stenochlaena | Carex scirpoidea Michx. var. stenochlaena Holm | CASCS6 |
| Carex scirpoidea ssp. stenochlaena | Carex stenochlaena (Holm) Mackenzie | CAST15 |
| Carex scoparia var. scoparia | Carex scoparia Schkuhr ex Willd. var. condensa Fern. | CASCC3 |
| Carex scoparia var. scoparia | Carex scoparia Schkuhr ex Willd. var. moniliformis Tuckerman | CASCM2 |
| Carex scoparia var. scoparia | Carex tribuloides Wahlenb. var. moniliformis (Tuckerman) Britt. | CATRM2 |
| Carex scopulorum var. bracteosa | Carex campylocarpa Holm | CACA10 |
| Carex scopulorum var. bracteosa | Carex campylocarpa Holm ssp. affinis Maguire & A. Holmgren | CACAA6 |
| Carex scopulorum var. bracteosa | Carex gymnoclada Holm | CAGY6 |
| Carex scopulorum var. prionophylla | Carex miserabilis Mackenzie | CAMI11 |
| Carex scopulorum var. prionophylla | Carex prionophylla Holm | CAPR13 |
| Carex scopulorum var. scopulorum | Carex chimaphila Holm | CACH17 |
| Carex scopulorum var. scopulorum | Carex scopulorum Holm var. chimaphila (Holm) K?kenth. | CASCC |
| Carex serratodens | Carex bifida W. Boott | CABI14 |
| Carex siccata | Carex aenea Fern. | CAAE |
| Carex siccata | Carex foenea Willd. | CAFO3 |
| Carex siccata | Carex foenea Willd. var. enervis Evans & Mohlenbrock | CAFOE |
| Carex siccata | Carex foenea Willd. var. foenea Willd. [superfluous autonym] | CAFOF |
| Carex siccata | Carex foenea Willd. var. tuberculata F.J. Herm. | CAFOT |
| Carex spectabilis | Carex invisa Bailey | CAIN32 |
| Carex spectabilis | Carex nigella Boott | CANI10 |
| Carex spectabilis | Carex tolmiei Boott | CATO14 |
| Carex spicata | Carex contigua Hoppe | CACO40 |
| Carex sterilis | Carex ?minganinsularum Raymond | CAMI31 |
| Carex sterilis | Carex elachycarpa Fern. | CAEL11 |
| Carex sterilis | Carex muricata L. var. sterilis (Willd.) Gleason | CAMUS |
| Carex sterilis | Kobresia elachycarpa (Fern.) Fern. | KOEL2 |
| Carex stipata var. maxima | Carex stipata Muhl. ex Willd. var. uberior C. Mohr | CASTU |
| Carex stipata var. maxima | Carex uberior (C. Mohr) Mackenzie | CAUB |
| Carex straminea | Carex richii (Fern.) Mackenzie | CARI6 |
| Carex striata var. brevis | Carex walteriana Bailey var. brevis (Bailey) Bailey | CAWAB |
| Carex striata var. striata | Carex walteriana Bailey | CAWA2 |
| Carex striatula | Carex ignota Dewey | CAIG |
| Carex striatula | Carex laxiflora Lam. var. angustifolia Dewey | CALAA4 |
| Carex stricta | Carex stricta Lam. var. strictior (Dewey) Carey | CASTS |
| Carex stricta | Carex strictior Dewey | CAST23 |
| Carex stylosa | Carex stylosa C.A. Mey. var. nigritella (Drej.) Fern. | CASTN |
| Carex subfusca | Carex macloviana d'Urv. ssp. subfusca (W. Boott) T. Koyama | CAMAS3 |
| Carex subfusca | Carex stenoptera Mackenzie | CAST25 |
| Carex subnigricans | Carex rachillis Maguire | CARA13 |
| Carex subspathacea | Carex salina Wahlenb. var. subspathacea (Wormsk. ex Hornem.) Tuckerman | CASAS11 |
| Carex superata | Carex willdenowii Schkuhr ex Willd. var. megarrhyncha F.J. Herm. | CAWIM |
| Carex supina var. spaniocarpa | Carex supina Willd. ex Wahlenb. ssp. spaniocarpa (Steud.) Hult | CASUS4 |
| Carex swanii | Carex virescens Muhl. ex Willd. var. swanii Fern. | CAVIS2 |
| Carex tahoensis | Carex eastwoodiana Stacey | CAEA2 |
| Carex tenera | Carex tenera Dewey var. echinodes (Fern.) Wieg. | CATEE |
| Carex tetrastachya | Carex brittoniana Bailey | CABR13 |
| Carex texensis | Carex retroflexa Muhl. ex Willd. var. texensis (Torr.) Fern. | CARET |
| Carex thunbergii | Carex nealiae R.W. Krauss | CANE9 |
| Carex tomentosa | Carex filiformis auct., non L. | CAFI13 |
| Carex tonsa var. rugosperma | Carex rugosperma Mackenzie | CARU5 |
| Carex tonsa var. tonsa | Carex rugosperma Mackenzie var. tonsa (Fern.) E.G. Voss | CARUT |
| Carex tonsa var. tonsa | Carex umbellata Schkuhr ex Willd. var. tonsa Fern. | CAUMT |
| Carex torreyi | Carex abbreviata Prescott | CAAB9 |
| Carex triangularis | Carex vulpinoidea Michx. var. platycarpa Hall | CAVUP |
| Carex typhina | Carex squarrosa L. var. typhina (Michx.) Nutt. | CASQT |
| Carex ultra | Carex spissa Bailey var. ultra (Bailey) K?kenth. | CASPU |
| Carex umbellata | Carex abdita Bickn. | CAAB11 |
| Carex utriculata | Carex inflata Huds. var. utriculata (Boott) Druce | CAINU |
| Carex utriculata | Carex rhynchophysa Fisch., C.A. Mey. & Av?-Lall. | CARH9 |
| Carex utriculata | Carex rostrata Stokes var. utriculata (Boott) Bailey | CAROU |
| Carex vaginata | Carex saltuensis Bailey | CASA14 |
| Carex vallicola var. rusbyi | Carex rusbyi Mackenzie | CARU12 |
| Carex venusta var. minor | Carex oblita Steud. | CAOB8 |
| Carex vernacula | Carex foetida All. var. vernacula (Bailey) K?kenth. | CAFOV |
| Carex vernacula | Carex foetida auct. non All. [misapplied] | CAFO8 |
| Carex vesicaria var. monile | Carex monile Tuckerman | CAMO24 |
| Carex vesicaria var. raeana | Carex raeana Boott | CARA14 |
| Carex vesicaria var. vesicaria | Carex inflata Huds. | CAIN37 |
| Carex virescens | Carex costata Schwein. | CACO47 |
| Carex virescens | Carex virescens Muhl. ex Willd. var. costata (Schwein.) Dewey | CAVIC |
| Carex viridula | Carex viridula Michx. var. viridula Michx. [superfluous autonym] | CAVIV2 |
| Carex viridula ssp. brachyrrhyncha var. elatior | Carex flava L. var. lepidocarpa (Tausch) Gord. | CAFLL3 |
| Carex viridula ssp. brachyrrhyncha var. elatior | Carex flava L. var. nelmesiana (Raymond) Boivin | CAFLN |
| Carex viridula ssp. brachyrrhyncha var. elatior | Carex lepidocarpa Tausch | CALE22 |
| Carex viridula ssp. oedocarpa | Carex demissa Hornem. | CADE17 |
| Carex viridula ssp. viridula | Carex oederi auct. non Retz. [misapplied] | CAOE |
| Carex viridula ssp. viridula | Carex oederi Retz. ssp. viridula (Michx.) Hult | CAOEV |
| Carex viridula ssp. viridula | Carex oederi Retz. var. recterostrata (Victorin) Dorn | CAOER |
| Carex viridula ssp. viridula | Carex serotina M?rat | CASE23 |
| Carex vulpinoidea var. vulpinoidea | Carex setacea Dewey | CASE22 |
| Carex wahuensis ssp. rubiginosa | Carex wahuensis C.A. Mey. var. rubiginosa R.W. Krauss | CAWAR |
| Carex whitneyi | Carex flaccifolia Mackenzie | CAFL23 |
| Carex whitneyi | Carex jepsonii J.T. Howell | CAJE |
| Carex willdenowii | Carex willdenowii Schkuhr ex Willd. var. willdenowii Schkuhr ex Willd. [superfluous autonym] | CAWIW |
| Carex williamsii | Carex capillaris L. var. williamsii (Britt.) Boivin | CACAW |
| Carex woodii | Carex colorata Mackenzie | CACO49 |
| Carex woodii | Carex tetanica Schkuhr var. woodii (Dewey) Wood | CATEW |
| Carey's sedge | Carex careyana Torr. ex Dewey | CACA14 |
| Caribbean beaksedge | Rhynchospora marisculus Nees ex Lindley & Nees | RHMA8 |
| Caribbean flatsedge | Cyperus calcicola Britt. | CYCA18 |
| Caribbean hairsedge | Bulbostylis junciformis (Kunth) C.B. Clarke | BUJU2 |
| Caribbean sedge | Carex polystachya Sw. ex Wahlenb. | CAPO5 |
| Carolina fimbry | Fimbristylis caroliniana (Lam.) Fern. | FICA3 |
| Carolina nutrush | Scleria pauciflora Muhl. ex Willd. var. caroliniana (Willd.) Wood | SCPAC |
| Carolina sedge | Carex caroliniana Schwein. | CACA15 |
| Carribean island spikesedge | Kyllinga vaginata Lam. | KYVA |
| cattail sedge | Carex typhina Michx. | CATY |
| cedar sedge | Carex planostachys Kunze | CAPL3 |
| chaffy sedge | Carex paleacea Schreb. ex Wahlenb. | CAPA29 |
| chairmaker's bulrush | Schoenoplectus americanus (Pers.) Volk. ex Schinz & R. Keller | SCAM6 |
| chamisso sedge | Carex pachystachya Cham. ex Steud. | CAPA14 |
| Chamisso's cottongrass | Eriophorum chamissonis C.A. Mey. | ERCH7 |
| Chapman's beaksedge | Rhynchospora chapmanii M.A. Curtis | RHCH3 |
| Chapman's sedge | Carex chapmanii Steud. | CACH9 |
| Cherokee sedge | Carex cherokeensis Schwein. | CACH3 |
| chestnut sedge | Carex castanea Wahlenb. | CACA16 |
| Chihuahuan sedge | Carex chihuahuensis Mackenzie | CACH4 |
| Chinese water chestnut | Eleocharis dulcus (Burm.) Trin. ex Hensch. | ELDU4 |
| circumpolar sedge | Carex adelostoma Krecz. | CAAD |
| Cladium californicum | Cladium mariscus (L.) Pohl var. californicum S. Wats. | CLMAC2 |
| Cladium californicum | Mariscus californicus (S. Wats.) Britt. | MACA12 |
| Cladium mariscoides | Mariscus mariscoides (Muhl.) Kuntze | MAMA20 |
| Cladium mariscus ssp. jamaicense | Cladium jamaicense Crantz | CLJA |
| Cladium mariscus ssp. jamaicense | Cladium leptostachyum Nees & Meyen | CLLE |
| Cladium mariscus ssp. jamaicense | Mariscus jamaicensis (Crantz) Britt. | MAJA3 |
| claspbract sedge | Carex amplectens Mackenzie | CAAM9 |
| claybank beaksedge | Rhynchospora rugosa (Vahl) Gale | RHRU3 |
| claybank beaksedge | Rhynchospora rugosa (Vahl) Gale ssp. lavarum (Gaud.) T. Koyama | RHRUL |
| claybank beaksedge | Rhynchospora rugosa (Vahl) Gale ssp. rugosa | RHRUR |
| cleft sedge | Carex fissuricola Mackenzie | CAFI2 |
| cliffs flatsedge | Cyperus sandwicensis K?kenth. | CYSA |
| Clinton's bulrush | Trichophorum clintonii (Gray) S.G. Sm. | TRCL4 |
| cloaked bulrush | Scirpus pallidus (Britt.) Fern. | SCPA8 |
| closedhead sedge | Carex norvegica Retz. ssp. inferalpina (Wahlenb.) Hult | CANOI |
| cloud sedge | Carex haydeniana Olney | CAHA6 |
| clustered beaksedge | Rhynchospora glomerata (L.) Vahl | RHGL3 |
| clustered field sedge | Carex praegracilis W. Boott | CAPR5 |
| clustered flatsedge | Cyperus congestus Vahl | CYCO3 |
| clustered sedge | Carex cumulata (Bailey) Fern. | CACU3 |
| coastal beaksedge | Rhynchospora pleiantha (K?kenth.) Gale | RHPL6 |
| coastal flatsedge | Cyperus pennatiformis K?kenth. | CYPE3 |
| coastal flatsedge | Cyperus pennatiformis K?kenth. var. pennatiformis | CYPEP |
| coastal plain beaksedge | Rhynchospora stenophylla Chapman | RHST2 |
| coastal plain flatsedge | Cyperus cuspidatus Kunth | CYCU |
| coastal plain sedge | Carex crebriflora Wieg. | CACR5 |
| coastal plain spikerush | Eleocharis retroflexa (Poir.) Urban | ELRE2 |
| coastal plain umbrella-sedge | Fuirena longa Chapman | FULO |
| coastal sand sedge | Carex incurviformis Mackenzie | CAIN8 |
| coastal sand sedge | Carex incurviformis Mackenzie var. danaensis (Stacey) F.J. Herm. | CAIND |
| coastal sand sedge | Carex incurviformis Mackenzie var. incurviformis | CAINI2 |
| coastal sedge | Carex exilis Dewey | CAEX7 |
| Cochise sedge | Carex ultra Bailey | CAUL |
| coiled sedge | Carex circinata C.A. Mey. | CACI5 |
| Collins's sedge | Carex collinsii Nutt. | CACO21 |
| Columbian sedge | Carex aperta Boott | CAAP3 |
| common spikerush | Eleocharis palustris (L.) Roemer & J.A. Schultes | ELPA3 |
| common spikerush | Eleocharis palustris (L.) Roemer & J.A. Schultes var. palustris | ELPAP |
| common threesquare | Schoenoplectus pungens (Vahl) Palla | SCPU10 |
| common threesquare | Schoenoplectus pungens (Vahl) Palla var. badius (J.& K. Presl) S.G. Sm. | SCPUB |
| common threesquare | Schoenoplectus pungens (Vahl) Palla var. longispicatus (Britt.) S.G. Sm. | SCPUL4 |
| common threesquare | Schoenoplectus pungens (Vahl) Palla var. pungens | SCPUP5 |
| cone-cup spikerush | Eleocharis tuberculosa (Michx.) Roemer & J.A. Schultes | ELTU |
| Congdon's bulrush | Scirpus congdonii Britt. | SCCO |
| Congdon's sedge | Carex congdonii Bailey | CACO12 |
| Contance's sedge | Carex constanceana Stacey | CACO80 |
| Cordilleran sedge | Carex cordillerana Saarela & B.A. Ford | CACO81 |
| cortadora | Scleria mitis Berg. | SCMI5 |
| cortadora blanca | Scleria pterota K. Presl ex C.B. Clarke | SCPT |
| cortadora blanca | Scleria pterota K. Presl ex C.B. Clarke var. melaleuca (Reichenb. ex Schlecht. & Cham.) Standl. | SCPTM |
| cortadora blanca | Scleria pterota K. Presl ex C.B. Clarke var. pterota | SCPTP |
| cosmopolitan bulrush | Schoenoplectus maritimus (L.) Lye | SCMA8 |
| cottongrass | Eriophorum L. | ERIOP |
| Crawe's sedge | Carex crawei Dewey | CACR3 |
| Crawford's sedge | Carex crawfordii Fern. | CACR4 |
| creeping sedge | Carex chordorrhiza Ehrh. ex L. f. | CACH5 |
| creeping spikerush | Eleocharis fallax Weatherby | ELFA |
| crested sedge | Carex cristatella Britt. | CACR7 |
| crevice flatsedge | Cyperus tenuis Sw. | CYTE4 |
| Cuban beaksedge | Rhynchospora sola Gale [excluded] | RHSO2 |
| Cuban bulrush | Oxycaryum cubense (Poepp. & Kunth) Lye | OXCU2 |
| Cuban nutrush | Scleria cubensis Boeckl. | SCCU2 |
| Cumberland sedge | Carex cumberlandensis Naczi, Kral & Bryson | CACU26 |
| curly sedge | Carex rupestris All. | CARU3 |
| curly sedge | Carex rupestris All. var. rupestris | CARUR |
| Curtiss's beaksedge | Rhynchospora curtissii Britt. | RHCU3 |
| Curtiss's nutrush | Scleria pauciflora Muhl. ex Willd. var. curtissii (Britt.) Fairey | SCPAC2 |
| curved sedge | Carex maritima Gunn. | CAMA14 |
| Cusick's sedge | Carex cusickii Mackenzie ex Piper & Beattie | CACU5 |
| cylinder spikerush | Eleocharis cylindrica Buckl. | ELCY |
| cymophyllus | Cymophyllus Mackenzie ex Britt. | CYMOP |
| Cymophyllus fraserianus | Carex fraseri Andr. | CAFR10 |
| Cymophyllus fraserianus | Carex fraseriana Ker-Gawl. | CAFR12 |
| Cymophyllus fraserianus | Cymophyllus fraseri (Andr.) Mackenzie ex Britt. | CYFR |
| Cyperus aggregatus | Cyperus cayennensis (Lam.) Britt., non Willd. ex Link | CYCA17 |
| Cyperus aggregatus | Cyperus flavus (Vahl) Nees, non J.& K. Presl | CYFL9 |
| Cyperus aggregatus | Cyperus huarmensis (Kunth) M.C. Johnston | CYHU5 |
| Cyperus aggregatus | Cyperus obesus Liebm. | CYOB5 |
| Cyperus aggregatus | Mariscus cayennensis (Lam.) Urban | MACA14 |
| Cyperus aggregatus | Mariscus flavus Vahl | MAFL6 |
| Cyperus amabilis | Cyperus amabilis Vahl var. macrostachyus (Boeckl.) K?kenth. | CYAMM |
| Cyperus amuricus | Cyperus microiria Steud. | CYMI4 |
| Cyperus auriculatus | Cyperus ferax L.C. Rich. var. auriculatus (Nees & Meyen ex Kunth) K?kenth. | CYFEA |
| Cyperus auriculatus | Torulinium odoratum (L.) S. Hooper ssp. auriculatum (Nees & Meyen ex Kunth) T. Koyama | TOODA |
| Cyperus bipartitus | Cyperus niger Ruiz & Pav?n var. rivularis (Kunth) V. Grant | CYNIR |
| Cyperus bipartitus | Cyperus rivularis Kunth | CYRI |
| Cyperus bipartitus | Pycreus rivularis (Kunth) Palla | PYRI2 |
| Cyperus confertus | Mariscus confertus (Sw.) C.B. Clarke | MACO19 |
| Cyperus congestus | Mariscus congestus (Vahl) C.B. Clarke | MACO18 |
| Cyperus croceus | Cyperus globulosus auct. non Aubl. [misapplied] | CYGL3 |
| Cyperus croceus | Cyperus multiflorus (Britt.) Small | CYMU9 |
| Cyperus croceus | Mariscus globulosus auct. non (Aubl.) Urban [misapplied] | MAGL8 |
| Cyperus cyperinus | Mariscus cyperinus (Retz.) Vahl | MACY4 |
| Cyperus dentoniae | Mariscus pubescens J.& K. Presl, non Cyperus pubescens Steud. | MAPU13 |
| Cyperus dipsaceus | Cyperus wrightii Britt. | CYWR |
| Cyperus echinatus | Cyperus ovularis (Michx.) Torr. | CYOV |
| Cyperus echinatus | Cyperus ovularis (Michx.) Torr. var. sphaericus Boeckl. | CYOVS |
| Cyperus entrerianus | Cyperus luzulae auct. non (L.) Rottb. ex Retz. [misapplied] | CYLU |
| Cyperus entrerianus | Scirpus luzulae auct. non L. [misapplied] | SCLU |
| Cyperus eragrostis | Cyperus vegetus Willd. | CYVE |
| Cyperus erythrorhizos | Cyperus halei Torr. ex Britt. | CYHA8 |
| Cyperus esculentus var. leptostachyus | Cyperus esculentus L. var. angustispicatus Britt. | CYESA |
| Cyperus esculentus var. macrostachyus | Cyperus lutescens Torr. & Hook. | CYLU3 |
| Cyperus fauriei | Mariscus fauriei (K?kenth.) T. Koyama | MAFA7 |
| Cyperus fendlerianus | Mariscus fendlerianus (Boeckl.) T. Koyama | MAFE2 |
| Cyperus filicinus | Cyperus nuttallii Eddy | CYNU4 |
| Cyperus filicinus | Cyperus polystachyos Rottb. var. filicinus (Vahl) C.B. Clarke | CYPOF |
| Cyperus filicinus | Cyperus polystachyos Rottb. var. macrostachyus Boeckl. | CYPOM2 |
| Cyperus filiformis | Cyperus unifolius Boeckl. | CYUN4 |
| Cyperus filiformis | Torulinium filiforme (Sw.) C.B. Clarke | TOFI2 |
| Cyperus flavescens | Cyperus flavescens L. var. poiformis (Pursh) Fern. | CYFLP |
| Cyperus flavescens | Cyperus nieuwlandii Geise | CYNI5 |
| Cyperus flavescens | Pycreus flavescens (L.) Reichenb. | PYFL3 |
| Cyperus flavicomus | Cyperus albomarginatus (Mart. & Schrad. ex Nees) Steud. | CYAL |
| Cyperus flavicomus | Cyperus sabulosus (Mart. & Schrad. ex Nees) Steud. | CYSA4 |
| Cyperus flavicomus | Pycreus flavicomus (Michx.) C.D. Adams | PYFL6 |
| Cyperus flexuosus | Cyperus vahlii (Schrad. ex Nees) Steud. | CYVA2 |
| Cyperus floridanus | Cyperus filiformis Sw. var. densiceps K?kenth. | CYFID |
| Cyperus fuligineus | Mariscus fuligineus (Chapman) C.B. Clarke | MAFU3 |
| Cyperus grayi | Cyperus filiculmis Vahl var. oblitus Fern. & Grisc. | CYFIO |
| Cyperus haspan | Cyperus haspan L. var. americanus Boeckl. | CYHAA |
| Cyperus hermaphroditus | Cyperus incompletus (Jacq.) Link | CYIN8 |
| Cyperus hillebrandii var. decipiens | Cyperus decipiens Hbd. | CYDE12 |
| Cyperus hillebrandii var. decipiens | Mariscus hillebrandii (Boeckl.) T. Koyama ssp. decipiens (Hbd.) T. Koyama | MAHID |
| Cyperus hillebrandii var. hillebrandii | Cyperus hillebrandii Boeckl. var. helleri K?kenth. | CYHIH |
| Cyperus hillebrandii var. hillebrandii | Cyperus hillebrandii Boeckl. var. mauiensis (Hbd.) K?kenth. | CYHIM |
| Cyperus hillebrandii var. hillebrandii | Mariscus hillebrandii (Boeckl.) T. Koyama | MAHI3 |
| Cyperus hypochlorus var. brevior | Mariscus hypochlorus (Hbd.) C.B. Clarke ssp. brevior (K?kenth.) T. Koyama | MAHYB |
| Cyperus hypochlorus var. hypochlorus | Cyperus hypochlorus Hbd. var. densispicatus Skottsberg | CYHYD |
| Cyperus hypochlorus var. hypochlorus | Mariscus hypochlorus (Hbd.) C.B. Clarke | MAHY2 |
| Cyperus hystricinus | Cyperus retrofractus (L.) Torr. var. hystricinus (Fern.) K?kenth. | CYREH |
| Cyperus imbricatus | Cyperus radiatus Vahl | CYRA7 |
| Cyperus involucratus | Cyperus alternifolius auct. non L. [misapplied] | CYAL2 |
| Cyperus involucratus | Cyperus alternifolius L. ssp. flabelliformis (Rottb.) K?kenth. | CYALF |
| Cyperus involucratus | Cyperus flabelliformis Rottb. | CYFL8 |
| Cyperus javanicus | Mariscus javanicus (Houtt.) Merr. & Metcalfe | MAJA5 |
| Cyperus laevigatus | Cyperus careyi Britt. | CYCA15 |
| Cyperus lanceolatus | Cyperus densus Link | CYDE13 |
| Cyperus lanceolatus | Cyperus lanceolatus Poir. var. compositus J.& K. Presl | CYLAC |
| Cyperus lentiginosus | Cyperus tenuis Sw. var. lentiginosus (Millsp. & Chase) K?kenth. | CYTEL |
| Cyperus ligularis | Mariscus ligularis (L.) Urban | MALI5 |
| Cyperus lupulinus ssp. lupulinus | Cyperus filiculmis auct. non Vahl [misapplied] | CYFI2 |
| Cyperus lupulinus ssp. lupulinus | Cyperus martindalei auct. non Britt. [misapplied] | CYMA16 |
| Cyperus lupulinus ssp. lupulinus | Mariscus filiculmis auct. non (Vahl) T. Koyama [misapplied] | MAFI2 |
| Cyperus lupulinus ssp. macilentus | Cyperus bushii Britt. | CYBU4 |
| Cyperus lupulinus ssp. macilentus | Cyperus filiculmis Vahl var. macilentus Fern. | CYFIM |
| Cyperus meyenianus | Mariscus meyenianus (Kunth) Nees | MAME7 |
| Cyperus mutisii | Cyperus asper (Liebm.) O'Neill | CYAS4 |
| Cyperus mutisii | Cyperus mutisii (Kunth) Griseb. var. asper (Liebm.) K?kenth. | CYMUA |
| Cyperus mutisii | Cyperus pringlei Britt. | CYPR |
| Cyperus mutisii | Mariscus mutisii Kunth | MAMU4 |
| Cyperus nanus var. nanus | Cyperus granularis (Desf.) Britt. | CYGR13 |
| Cyperus nanus var. subtenuis | Mariscus capillaris (Sw.) Vahl | MACA13 |
| Cyperus neokunthianus | Cyperus kunthianus (Gaud.) Hbd. | CYKU2 |
| Cyperus neokunthianus | Mariscus kunthianus Gaud. | MAKU |
| Cyperus niger | Cyperus diandrus Torr. var. capitatus Britt. | CYDIC |
| Cyperus niger | Cyperus melanostachyus Kunth | CYME11 |
| Cyperus niger | Cyperus niger Ruiz & Pav?n var. capitatus (Britt.) O'Neill | CYNIC |
| Cyperus niger | Cyperus niger Ruiz & Pav?n var. castaneus (Pursh) K?kenth. | CYNIC2 |
| Cyperus niger | Pycreus niger (Ruiz & Pav?n) Cufod. | PYNI |
| Cyperus odoratus | Cyperus acicularis Schrad. ex Nees | CYAC6 |
| Cyperus odoratus | Cyperus eggersii Boeckl. | CYEG |
| Cyperus odoratus | Cyperus engelmannii Steud. | CYEN |
| Cyperus odoratus | Cyperus ferax L.C. Rich. | CYFE3 |
| Cyperus odoratus | Cyperus ferruginescens Boeckl. | CYFE4 |
| Cyperus odoratus | Cyperus longispicatus J.B.S. Norton | CYLO9 |
| Cyperus odoratus | Cyperus macrocephalus Liebm. | CYMA20 |
| Cyperus odoratus | Cyperus macrocephalus Liebm. var. eggersii (Boeckl.) S.D. Jones, J. Wipff & R. Carter | CYMAE2 |
| Cyperus odoratus | Cyperus odoratus L. var. acicularis (Schrad. ex Nees) O'Neill | CYODA |
| Cyperus odoratus | Cyperus odoratus L. var. engelmannii (Steud.) R. Carter & S.D. Jones | CYODE |
| Cyperus odoratus | Cyperus odoratus L. var. squarrosus (Britt.) S.D. Jones, J. Wipff & R. Carter | CYODS |
| Cyperus odoratus | Cyperus speciosus Vahl | CYSP6 |
| Cyperus odoratus | Cyperus speciosus Vahl var. squarrosus Britt. | CYSPS2 |
| Cyperus odoratus | Mariscus huarmensis Kunth | MAHU |
| Cyperus odoratus | Torulinium confertum Desv. ex Hamilton | TOCO3 |
| Cyperus odoratus | Torulinium eggersii (Boeckl.) C.B. Clarke | TOEG |
| Cyperus odoratus | Torulinium odoratum (L.) S. Hooper | TOOD |
| Cyperus ovatus | Cyperus pollardii Britt. | CYPO7 |
| Cyperus pennatiformis var. bryanii | Mariscus pennatiformis (K?kenth.) T. Koyama ssp. bryanii (K?kenth.) T. Koyama | MAPEB |
| Cyperus pennatiformis var. pennatiformis | Mariscus pennatiformis (K?kenth.) T. Koyama | MAPE5 |
| Cyperus phleoides var. hawaiensis | Mariscus phleoides Nees ex Kunth ssp. hawaiensis (Mann) T. Koyama | MAPHH |
| Cyperus phleoides var. phleoides | Mariscus phleoides Nees ex Kunth | MAPH5 |
| Cyperus planifolius | Cyperus brunneus Sw. | CYBR11 |
| Cyperus planifolius | Mariscus planifolius (L.C. Rich.) Urban | MAPL4 |
| Cyperus polystachyos var. polystachyos | Cyperus paniculatus Rottb. | CYPA20 |
| Cyperus polystachyos var. polystachyos | Cyperus polystachyos Rottb. var. leptostachyus Boeckl. | CYPOL3 |
| Cyperus polystachyos var. polystachyos | Cyperus polystachyos Rottb. var. pallidus Hbd. | CYPOP |
| Cyperus polystachyos var. polystachyos | Cyperus polystachyos Rottb. var. paniculatus (Rottb.) C.B. Clarke | CYPOP3 |
| Cyperus polystachyos var. polystachyos | Mariscus polystachyos auct. non A. Rich. [misapplied] | MAPO8 |
| Cyperus polystachyos var. polystachyos | Pycreus polystachyos (Rottb.) Beauv. | PYPO |
| Cyperus polystachyos var. texensis | Cyperus holosericeus Link | CYHO9 |
| Cyperus polystachyos var. texensis | Cyperus microdontus Torr. | CYMI5 |
| Cyperus polystachyos var. texensis | Cyperus polystachyos Rottb. var. laxiflorus Benth. | CYPOL |
| Cyperus polystachyos var. texensis | Pycreus polystachyos (Rottb.) Beauv. ssp. holosericeus (Link) T. Koyama | PYPOH |
| Cyperus pseudovegetus | Cyperus virens Michx. var. arenicola (Boeckl.) Shinners | CYVIA |
| Cyperus reflexus | Cyperus reflexus Vahl var. fraternus (Kunth) Kuntze | CYREF |
| Cyperus retroflexus | Cyperus uniflorus Torr. & Hook. var. pseudothyrsiflorus K?kenth. | CYUNP |
| Cyperus retroflexus | Cyperus uniflorus Torr. & Hook., non Thunb. | CYUN2 |
| Cyperus retrofractus | Cyperus dipsaciformis Fern. | CYDI11 |
| Cyperus retrofractus | Cyperus retrofractus (L.) Torr. var. dipsaciformis (Fern.) K?kenth. | CYRED |
| Cyperus retrofractus | Scirpus retrofractus L. | SCRE4 |
| Cyperus retrorsus var. retrorsus | Cyperus blodgettii Britt. | CYBL2 |
| Cyperus retrorsus var. retrorsus | Cyperus cylindricus (Ell.) Britt. | CYCY4 |
| Cyperus retrorsus var. retrorsus | Cyperus deeringianus Britt. ex Small | CYDE14 |
| Cyperus retrorsus var. retrorsus | Cyperus litoreus (C.B. Clarke) Britt. | CYLI10 |
| Cyperus retrorsus var. retrorsus | Cyperus nashii Britt. | CYNA3 |
| Cyperus retrorsus var. retrorsus | Cyperus ovularis (Michx.) Torr. var. cylindricus (Ell.) Torr. | CYOVC |
| Cyperus retrorsus var. retrorsus | Cyperus retrorsus Chapman var. cylindricus (Ell.) Fern. & Grisc. | CYREC |
| Cyperus retrorsus var. retrorsus | Cyperus retrorsus Chapman var. deeringianus (Britt. ex Small) Fern. ex Grisc. | CYRED2 |
| Cyperus retrorsus var. retrorsus | Cyperus retrorsus Chapman var. nashii (Britt.) Fern. & Grisc. | CYREN |
| Cyperus retrorsus var. retrorsus | Cyperus torreyi Britt. | CYTO |
| Cyperus retrorsus var. retrorsus | Cyperus winkleri Britt. ex Small | CYWI5 |
| Cyperus retrorsus var. retrorsus | Mariscus cylindricus Ell. | MACY5 |
| Cyperus retrorsus var. robustus | Cyperus globulosus Aubl. var. robustus (Boeckl.) Shinners | CYGLR |
| Cyperus rockii | Mariscus rockii (K?kenth.) T. Koyama | MARO7 |
| Cyperus sandwicensis | Cyperus sandwicensis K?kenth. var. pseudoprescottianus K?kenth. | CYSAP |
| Cyperus sandwicensis | Mariscus sandwicensis (K?kenth.) T. Koyama | MASA6 |
| Cyperus sanguinolentus | Cyperus louisianensis Thieret | CYLO8 |
| Cyperus sanguinolentus | Cyperus sanguindentus Vahl [orthographic error] | CYSA3 |
| Cyperus sanguinolentus | Pycreus sanguindentus (Vahl) Nees [orthographic error] | PYSA |
| Cyperus sanguinolentus | Pycreus sanguinolentus (Vahl) Nees | PYSA5 |
| Cyperus schweinitzii | Cyperus ?mesochoreus Geise | CYME2 |
| Cyperus schweinitzii | Cyperus schweinitzii Torr. var. uberior K?kenth. | CYSCU |
| Cyperus schweinitzii | Mariscus schweinitzii (Torr.) T. Koyama | MASC7 |
| Cyperus serotinus | Juncellus serotinus (Rottb.) Clarke | JUSE5 |
| Cyperus setigerus | Cyperus hallii Britt. | CYHA10 |
| Cyperus setigerus | Cyperus praelongatus Steud. | CYPR12 |
| Cyperus spectabilis | Cyperus buckleyi Britt. | CYBU6 |
| Cyperus sphaerolepis | Cyperus fendlerianus Boeckl. var. debilis (Britt.) K?kenth. | CYFED |
| Cyperus sphaerolepis | Cyperus rusbyi Britt. | CYRU |
| Cyperus squarrosus | Cyperus aristatus Rottb. | CYAR3 |
| Cyperus squarrosus | Cyperus aristatus Rottb. var. runyonii O'Neill | CYARR |
| Cyperus squarrosus | Cyperus inflexus Muhl. | CYIN9 |
| Cyperus squarrosus | Cyperus squarrosus L. var. runyonii (O'Neill) S.D. Jones & J. Wipff | CYSQR |
| Cyperus strigosus | Cyperus hansenii Britt. | CYHA9 |
| Cyperus strigosus | Cyperus stenolepis Torr. | CYST2 |
| Cyperus strigosus | Cyperus strigosus L. var. capitatus Boeckl. | CYSTC |
| Cyperus strigosus | Cyperus strigosus L. var. multiflorus Geise | CYSTM |
| Cyperus strigosus | Cyperus strigosus L. var. robustior Britt. | CYSTR |
| Cyperus strigosus | Cyperus strigosus L. var. stenolepis (Torr.) K?kenth. | CYSTS |
| Cyperus swartzii | Mariscus gracilis Vahl | MAGR11 |
| Cyperus thyrsiflorus | Cyperus dissitiflorus Nees ex Torr. | CYDI9 |
| Cyperus unioloides | Pycreus unioloides (R. Br.) C.B. Clarke | PYUN3 |
| Cyperus urbanii | Mariscus urbanii (Boeckl.) C.B. Clarke | MAUR2 |
| Cyperus virens | Cyperus drummondii Torr. & Hook. | CYDR3 |
| Cyperus virens | Cyperus robustus Kunth | CYRO10 |
| Cyperus virens | Cyperus virens Michx. var. drummondii (Torr. & Hook.) K?kenth. | CYVID |
| cypress swamp sedge | Carex joorii Bailey | CAJO2 |
| cypressknee sedge | Carex decomposita Muhl. | CADE6 |
| cypresslike sedge | Carex pseudocyperus L. | CAPS |
| daggerleaf spikerush | Eleocharis lanceolata Fern. | ELLA |
| darkbrown sedge | Carex atrofusca Schkuhr | CAAT7 |
| darkbrown sedge | Carex atrofusca Schkuhr var. atrofusca | CAATA3 |
| darkbrown sedge | Carex atrofusca Schkuhr var. major (Boeckl.) Raymond | CAATM |
| darkgreen sedge | Carex venusta Dewey | CAVE7 |
| darkgreen sedge | Carex venusta Dewey var. minor Boeckl. | CAVEM |
| darkgreen sedge | Carex venusta Dewey var. venusta | CAVEV |
| Davis's sedge | Carex davisii Schwein. & Torr. | CADA |
| Davy's sedge | Carex davyi Mackenzie | CADA2 |
| decumbent spikerush | Eleocharis decumbens C.B. Clarke | ELDE2 |
| deer sedge | Carex hallii Olney | CAHA3 |
| delta bulrush | Schoenoplectus deltarum (Schuyler) Soj | SCDE6 |
| dense sedge | Carex densa (Bailey) Bailey | CADE8 |
| densetuft hairsedge | Bulbostylis capillaris (L.) Kunth ex C.B. Clarke | BUCA2 |
| densetuft hairsedge | Bulbostylis capillaris (L.) Kunth ex C.B. Clarke ssp. antillana (Britt.) T. Koyama | BUCAA |
| densetuft hairsedge | Bulbostylis capillaris (L.) Kunth ex C.B. Clarke ssp. capillaris | BUCAC |
| Dewey sedge | Carex deweyana Schwein. | CADE9 |
| Dewey sedge | Carex deweyana Schwein. var. deweyana | CADED4 |
| different-nerve sedge | Carex heteroneura W. Boott | CAHE8 |
| different-nerve sedge | Carex heteroneura W. Boott var. brevisquama F.J. Herm. | CAHEB |
| different-nerve sedge | Carex heteroneura W. Boott var. epapillosa (Mackenzie) F.J. Herm. | CAHEE |
| different-nerve sedge | Carex heteroneura W. Boott var. heteroneura | CAHEH3 |
| different-spike sedge | Carex heterostachya Bung | CAHE27 |
| diffused flatsedge | Cyperus diffusus Vahl | CYDI12 |
| dioecious sedge | Carex sterilis Willd. | CAST16 |
| distant sedge | Carex distans L. | CADI27 |
| ditch fimbry | Fimbristylis schoenoides (Retz.) Vahl | FISC |
| Dixie sedge | Carex communis Bailey var. amplisquama (F.J. Herm.) J. Rettig | CACOA2 |
| dotted beaksedge | Rhynchospora punctata Ell. | RHPU4 |
| Douglas's sedge | Carex douglasii Boott | CADO2 |
| drooping bulrush | Scirpus lineatus Michx. | SCLI5 |
| drooping sedge | Carex prasina Wahlenb. | CAPR12 |
| drooping woodland sedge | Carex arctata Boott ex Hook. | CAAR3 |
| Drummond's halfchaff sedge | Lipocarpha drummondii (Nees) G. Tucker | LIDR3 |
| Drummond's sedge | Carex rupestris All. var. drummondiana (Dewey) Bailey | CARUD |
| Drummond's sedge | Cyperus drummondii Torr. & Gray | CYDR4 |
| dryspike sedge | Carex siccata Dewey | CASI12 |
| Dudley's sedge | Carex dudleyi Mackenzie | CADU2 |
| dulichium | Dulichium Pers. | DULIC |
| dunhead sedge | Carex phaeocephala Piper | CAPH2 |
| duskyseed sedge | Carex pelocarpa F.J. Herm. | CAPE5 |
| dwarf sedge | Carex pumila Thunb. | CAPU32 |
| dwarf spikerush | Eleocharis parvula (Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer | ELPA5 |
| dwarf umbrella-sedge | Fuirena pumila (Torr.) Spreng. | FUPU |
| eared flatsedge | Cyperus auriculatus Nees & Meyen ex Kunth | CYAU2 |
| early sedge | Carex praeceptorum Mackenzie | CAPR22 |
| eastern fox sedge | Carex triangularis Boeckl. | CATR6 |
| eastern narrowleaf sedge | Carex amphibola Steud. | CAAM8 |
| eastern rough sedge | Carex scabrata Schwein. | CASC13 |
| eastern star sedge | Carex radiata (Wahlenb.) Small | CARA8 |
| eastern straw sedge | Carex straminea Willd. ex Schkuhr | CAST6 |
| eastern woodland sedge | Carex blanda Dewey | CABL |
| ebony sedge | Carex ebenea Rydb. | CAEB |
| Edwards Plateau sedge | Carex edwardsiana Bridges & Orzell | CAED5 |
| eggbract sedge | Carex ovalis Goodenough | CAOV8 |
| Eggers's nutrush | Scleria eggersiana Boeckl. | SCEG |
| Eggleston's sedge | Carex egglestonii Mackenzie | CAEG |
| elegant spikerush | Eleocharis elegans (Kunth) Roemer & J.A. Schultes | ELEL |
| Eleocharis acicularis var. acicularis | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. gracilescens Svens. | ELACG |
| Eleocharis acicularis var. acicularis | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. occidentalis Svens. | ELACO |
| Eleocharis acicularis var. acicularis | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. submersa (Hj. Nilss.) Svens. | ELACS |
| Eleocharis acicularis var. acicularis | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. typica Svens. | ELACT |
| Eleocharis acutangula | Eleocharis fistulosa J.A. Schultes | ELFI |
| Eleocharis acutangula | Scirpus fistulosus Poir., non Forssk. | SCFI |
| Eleocharis atropurpurea | Eleocharis multiflora Chapman | ELMU4 |
| Eleocharis atropurpurea | Scirpus atropurpureus Retz. | SCAT5 |
| Eleocharis baldwinii | Eleocharis capillacea auct. non Kunth [misapplied] | ELCA14 |
| Eleocharis baldwinii | Eleocharis prolifera Torr. | ELPR |
| Eleocharis bella | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. bella Piper | ELACB |
| Eleocharis bella | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. minima Torr. | ELACM |
| Eleocharis bicolor | Eleocharis minima Kunth var. bicolor (Chapman) Svens. | ELMIB2 |
| Eleocharis bolanderi | Eleocharis montevidensis Kunth var. bolanderi (Gray) V. Grant | ELMOB |
| Eleocharis brittonii | Eleocharis microcarpa Torr. var. brittonii (Svens. ex Small) Svens. | ELMIB |
| Eleocharis compressa var. acutisquamata | Eleocharis acutisquamata Buckl. | ELAC2 |
| Eleocharis compressa var. compressa | Eleocharis acuminata (Muhl.) Nees | ELAC4 |
| Eleocharis compressa var. compressa | Eleocharis compressa Sullivant var. atrata Svens. | ELCOA2 |
| Eleocharis compressa var. compressa | Eleocharis elliptica Kunth var. atrata (Svens.) S.G. Sm. | ELELA |
| Eleocharis compressa var. compressa | Eleocharis elliptica Kunth var. compressa (Sullivant) Drapalik & Mohlenbrock | ELELC |
| Eleocharis compressa var. compressa | Eleocharis tenuis (Willd.) J.A. Schultes var. atrata (Svens.) Boivin | ELTEA |
| Eleocharis decumbens | Eleocharis montevidensis Kunth var. decumbens (C.B. Clarke) V. Grant | ELMOD |
| Eleocharis diandra | Eleocharis diandra C. Wright var. depressa Fern. | ELDID |
| Eleocharis diandra | Eleocharis obtusa auct. non (Willd.) J.A. Schultes [misapplied] | ELOB4 |
| Eleocharis diandra | Eleocharis ovata Britt. p.p. | ELOV2 |
| Eleocharis dulcus | Eleocharis dulcis (Burman f.) Trin. ex Henschel [orthographic variant] | ELDU3 |
| Eleocharis dulcus | Eleocharis tuberosa (Roxb.) Schultes | ELTU3 |
| Eleocharis elliptica | Eleocharis capitata (L.) R. Br. var. borealis Svens. | ELCAB3 |
| Eleocharis elliptica | Eleocharis compressa Sullivant var. borealis (Svens.) Drapalik & Mohlenbrock | ELCOB |
| Eleocharis elliptica | Eleocharis tenuis (Willd.) J.A. Schultes var. borealis (Svens.) Gleason | ELTEB |
| Eleocharis engelmannii | Eleocharis engelmannii Steud. var. monticola (Fern.) Svens. | ELENM |
| Eleocharis engelmannii | Eleocharis engelmannii Steud. var. robusta Fern. | ELENR |
| Eleocharis engelmannii | Eleocharis monticola Fern. | ELMO7 |
| Eleocharis engelmannii | Eleocharis monticola Fern. var. pallida St. John | ELMOP |
| Eleocharis engelmannii | Eleocharis obtusa (Willd.) J.A. Schultes var. detonsa (Gray) Drapalik & Mohlenbrock | ELOBD |
| Eleocharis engelmannii | Eleocharis obtusa (Willd.) J.A. Schultes var. engelmannii (Steud.) Gilly | ELOBE |
| Eleocharis engelmannii | Eleocharis ovata (Roth) Roemer & J.A. Schultes var. detonsa (Gray) Mohlenbrock | ELOVD |
| Eleocharis engelmannii | Eleocharis ovata (Roth) Roemer & J.A. Schultes var. engelmannii (Steud.) Britt. | ELOVE |
| Eleocharis equisetoides | Eleocharis elliottii A. Dietr. | ELEL7 |
| Eleocharis equisetoides | Scirpus equisetoides Ell. | SCEQ |
| Eleocharis erythropoda | Eleocharis calva Torr. | ELCA8 |
| Eleocharis erythropoda | Scirpus glaucus Torr. | SCGL8 |
| Eleocharis erythropoda | Trichophorum palustre (L.) Farw. var. calvum (Torr.) House | TRPAC2 |
| Eleocharis fallax | Eleocharis ambigens Fern. | ELAM4 |
| Eleocharis flavescens var. flavescens | Eleocharis flavescens (Poir.) Urban var. fuscescens (K?kenth.) Svens. | ELFLF2 |
| Eleocharis flavescens var. flavescens | Eleocharis praticola Britt. | ELPR2 |
| Eleocharis flavescens var. flavescens | Heleocharis flaccida (Reichenb.) Urban | HEFL11 |
| Eleocharis flavescens var. flavescens | Heleocharis flaccida (Reichenb.) Urban var. fuscescens K?kenth. | HEFLF2 |
| Eleocharis flavescens var. flavescens | Scirpus flavescens Poir. | SCFL6 |
| Eleocharis flavescens var. thermalis | Eleocharis thermalis Rydb. | ELTH |
| Eleocharis geniculata | Eleocharis capitata (L.) R. Br. var. dispar (E.J. Hill) Fern. | ELCAD |
| Eleocharis geniculata | Eleocharis caribaea (Rottb.) Blake | ELCA2 |
| Eleocharis geniculata | Eleocharis caribaea (Rottb.) Blake var. dispar (E.J. Hill) Blake | ELCAD2 |
| Eleocharis geniculata | Scirpus caribaea Rottb. | SCCA8 |
| Eleocharis geniculata | Scirpus geniculata L. | SCGE4 |
| Eleocharis halophila | Eleocharis uniglumis (Link) J.A. Schultes var. halophila Fern. & Brack. | ELUNH |
| Eleocharis interstincta | Scirpus interstinctus Vahl | SCIN7 |
| Eleocharis kamtschatica | Scirpus kamtschaticus C.A. Mey. | SCKA3 |
| Eleocharis lanceolata | Eleocharis obtusa (Willd.) J.A. Schultes var. lanceolata (Fern.) Gilly | ELOBL |
| Eleocharis macrostachya | Eleocharis perlonga Fern. & Brack. | ELPE4 |
| Eleocharis macrostachya | Eleocharis xyridiformis Fern. & Brack. | ELXY |
| Eleocharis mamillata | Scirpus mamillata Lindb. f. | SCMA14 |
| Eleocharis microcarpa | Eleocharis microcarpa Torr. var. filiculmis Torr. | ELMIF |
| Eleocharis microcarpa | Eleocharis torreyana Boeckl. | ELTO3 |
| Eleocharis minima | Eleocharis minima Kunth var. ambigua (Steud.) K?kenth. | ELMIA |
| Eleocharis minima | Eleocharis uncialis Chapman ex Small | ELUN3 |
| Eleocharis montana | Eleocharis montana (Kunth) Roemer & J.A. Schultes var. nodulosa (Roth) Svens. | ELMON |
| Eleocharis montana | Eleocharis nodulosa (Roth) J.A. Schultes | ELNO |
| Eleocharis montana | Scirpus montana Kunth | SCMO12 |
| Eleocharis montevidensis | Eleocharis arenicola Torr. | ELAR8 |
| Eleocharis montevidensis | Eleocharis palmeri Svens. | ELPA2 |
| Eleocharis mutata | Scirpus mutatus L. | SCMU7 |
| Eleocharis nigrescens | Eleocharis carolina Small | ELCA17 |
| Eleocharis nigrescens | Eleocharis minutiflora Boeckl. | ELMI4 |
| Eleocharis nigrescens | Eleocharis nigrescens (Nees) Steud. var. minutiflora (Boeckl.) Svens. | ELNIM |
| Eleocharis nigrescens | Eleocharis setifolia auct. non (A. Rich.) Raynal [misapplied] | ELSE3 |
| Eleocharis obtusa | Eleocharis obtusa (Willd.) J.A. Schultes var. ellipsoidalis Fern. ex Svens. | ELOBE2 |
| Eleocharis obtusa | Eleocharis obtusa (Willd.) J.A. Schultes var. gigantea (C.B. Clarke) Fern. | ELOBG |
| Eleocharis obtusa | Eleocharis obtusa (Willd.) J.A. Schultes var. jejuna Fern. | ELOBJ |
| Eleocharis obtusa | Eleocharis obtusa (Willd.) J.A. Schultes var. peasei Svens. | ELOBP |
| Eleocharis obtusa | Eleocharis obtusa (Willd.) Schult. var. obtusa (Willd.) Schult. [superfluous autonym] | ELOBO2 |
| Eleocharis obtusa | Eleocharis ovata (Roth) Roemer & J.A. Schultes var. obtusa (Willd.) K?kenth. | ELOVO |
| Eleocharis obtusa | Scirpus obtusus Willd. | SCOB3 |
| Eleocharis olivacea var. olivacea | Eleocharis flaccida (Reichenb.) Urban var. olivacea (Torr.) Fern. & Grisc. | ELFLO |
| Eleocharis olivacea var. olivacea | Eleocharis flavescens (Poir.) Urban var. olivacea (Torr.) Gleason | ELFLO2 |
| Eleocharis ovata | Eleocharis annua House | ELAN3 |
| Eleocharis ovata | Eleocharis obtusa (Willd.) J.A. Schultes var. heuseri Uechtr. | ELOBH |
| Eleocharis ovata | Eleocharis obtusa (Willd.) J.A. Schultes var. ovata (Roth) Drapalik & Mohlenbrock | ELOBO |
| Eleocharis ovata | Scirpus ovatus Roth | SCOV3 |
| Eleocharis pachystyla | Scirpus pachystylus C. Wright | SCPA13 |
| Eleocharis palustris | Scirpus palustris L. | SCPA20 |
| Eleocharis palustris var. palustris | Eleocharis calva Torr. var. australis (Nees) St. John | ELCAA |
| Eleocharis palustris var. palustris | Eleocharis mamillata auct. non Lindb. f. [misapplied] | ELMA6 |
| Eleocharis palustris var. palustris | Eleocharis palustris (L.) Roemer & J.A. Schultes var. australis Nees | ELPAA2 |
| Eleocharis palustris var. palustris | Eleocharis palustris (L.) Roemer & J.A. Schultes var. major Sonder | ELPAM |
| Eleocharis palustris var. palustris | Eleocharis smallii Britt. | ELSM |
| Eleocharis palustris var. palustris | Eleocharis smallii Britt. var. major (Sonder) Seymour | ELSMM2 |
| Eleocharis parishii | Eleocharis disciformis Parish | ELDI |
| Eleocharis parishii | Eleocharis montevidensis Kunth var. disciformis (Parish) V. Grant | ELMOD2 |
| Eleocharis parishii | Eleocharis montevidensis Kunth var. parishii (Britt.) V. Grant | ELMOP2 |
| Eleocharis parvula | Chaetocyperus membranacea Buckl. | CHME11 |
| Eleocharis parvula | Eleocharis coloradoensis (Britt.) Gilly | ELCO6 |
| Eleocharis parvula | Eleocharis leptos (Steud.) Svens. | ELLE |
| Eleocharis parvula | Eleocharis leptos (Steud.) Svens. var. coloradoensis (Britt.) Svens. | ELLEC |
| Eleocharis parvula | Eleocharis leptos (Steud.) Svens. var. johnstonii Svens. | ELLEJ |
| Eleocharis parvula | Eleocharis membranacea (Buckl.) Gilly | ELME2 |
| Eleocharis parvula | Eleocharis parvula (Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer var. anachaeta (Britt.) Svens. | ELPAA |
| Eleocharis parvula | Eleocharis parvula (Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer var. coloradoensis (Britt.) Beetle | ELPAC |
| Eleocharis parvula | Scirpus nanus Spreng. | SCNA2 |
| Eleocharis parvula | Scirpus nanus Spreng. var. anachaetus (Torr.) Britt. | SCNAA |
| Eleocharis quadrangulata | Eleocharis quadrangulata (Michx.) Roemer & J.A. Schultes var. crassior Fern. | ELQUC |
| Eleocharis quadrangulata | Scirpus quadrangulatus Michx. | SCQU |
| Eleocharis quinqueflora | Eleocharis bernardina Munz & Johnston | ELBE2 |
| Eleocharis quinqueflora | Eleocharis pauciflora (Lightf.) Link | ELPA6 |
| Eleocharis quinqueflora | Eleocharis pauciflora (Lightf.) Link var. bernardina (Munz & Johnston) Svens. | ELPAB |
| Eleocharis quinqueflora | Eleocharis pauciflora (Lightf.) Link var. fernaldii Svens. | ELPAF |
| Eleocharis quinqueflora | Eleocharis quinqueflora (F.X. Hartmann) Schwarz ssp. fernaldii (Svens.) Hult | ELQUF |
| Eleocharis quinqueflora | Eleocharis quinqueflora (F.X. Hartmann) Schwarz var. bernardina (Munz & Johnston) S. Gonz?lez & P.M. Peterson | ELQUB |
| Eleocharis quinqueflora | Scirpus pauciflorus Lightf. | SCPA15 |
| Eleocharis quinqueflora | Scirpus quinqueflorus F.X. Hartmann | SCQU4 |
| Eleocharis radicans | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. radicans (A. Dietr.) Britt. | ELACR |
| Eleocharis radicans | Eleocharis lindheimeri Svens. | ELLI3 |
| Eleocharis retroflexa | Scirpus retroflexus Poir. | SCRE5 |
| Eleocharis rostellata | Eleocharis rostellata (Torr.) Torr. var. congdonii Jepson | ELROC |
| Eleocharis rostellata | Eleocharis rostellata (Torr.) Torr. var. occidentalis S. Wats. | ELROO |
| Eleocharis rostellata | Scirpus rostellatus Torr. | SCRO6 |
| Eleocharis sintenisii | Eleocharis ekmanii K?kenth. | ELEK |
| Eleocharis sintenisii | Eleocharis shaferi Britt. | ELSH |
| Eleocharis sintenisii | Eleocharis yunquensis Britt. | ELYU2 |
| Eleocharis suksdorfiana | Eleocharis pauciflora (Lightf.) Link var. suksdorfiana (Beauv.) Svens. | ELPAS |
| Eleocharis suksdorfiana | Eleocharis quinqueflora (F.X. Hartmann) Schwarz ssp. suksdorfiana (Beauv.) Hult | ELQUS |
| Eleocharis suksdorfiana | Eleocharis quinqueflora (F.X. Hartmann) Schwarz var. suksdorfiana (Beauv.) J.T. Howell | ELQUS2 |
| Eleocharis tenuis var. pseudoptera | Eleocharis capitata (L.) R. Br. var. pseudoptera Weatherby ex Svens. | ELCAP |
| Eleocharis tenuis var. pseudoptera | Eleocharis elliptica Kunth var. pseudoptera (Weatherby ex Svens.) L. Harms | ELELP2 |
| Eleocharis tenuis var. tenuis | Eleocharis capitata sensu Blake, non (L.) R. Br. | ELCA16 |
| Eleocharis tenuis var. tenuis | Scirpus quadrangulatus Muhl., non Michx. | SCQU2 |
| Eleocharis tenuis var. tenuis | Trichophyllum tenue Farw. | TRTE7 |
| Eleocharis tenuis var. verrucosa | Eleocharis capitata (L.) R. Br. var. verrucosa Svens. | ELCAV |
| Eleocharis tenuis var. verrucosa | Eleocharis verrucosa (Svens.) L. Harms | ELVE |
| Eleocharis tortilis | Eleocharis simplex auct. non (Ell.) A. Dietr. [misapplied] | ELSI5 |
| Eleocharis tortilis | Scirpus tortilis Link | SCTO5 |
| Eleocharis tuberculosa | Eleocharis simplex (Ell.) A. Dietr. | ELSI7 |
| Eleocharis tuberculosa | Eleocharis tuberculosa (Michx.) Roemer & J.A. Schultes var. pubnicoensis Fern. | ELTUP |
| Eleocharis tuberculosa | Scirpus tuberculosa Michx. | SCTU6 |
| Eleocharis uniglumis | Scirpus uniglumis Link | SCUN5 |
| Eleocharis vivipara | Eleocharis curtisii Small | ELCU |
| Eleocharis wolfii | Scirpus wolfii Gray | SCWO |
| elk sedge | Carex garberi Fern. | CAGA3 |
| Elliott's beaksedge | Rhynchospora elliottii A. Dietr. | RHEL |
| Elliott's sedge | Carex elliottii Schwein. & Torr. | CAEL9 |
| elliptic spikerush | Eleocharis elliptica Kunth | ELEL4 |
| Emmons's sedge | Carex albicans Willd. ex Spreng. var. emmonsii (Dewey ex Torr.) J. Rettig | CAALE |
| Emory's sedge | Carex emoryi Dewey | CAEM2 |
| Enander's sedge | Carex lenticularis Michx. var. dolia (M.E. Jones) L.A. Standley | CALED |
| Engelmann's sedge | Carex engelmannii Bailey | CAEN3 |
| Engelmann's spikerush | Eleocharis engelmannii Steud. | ELEN |
| epiphytic flatsedge | Cyperus lanceolatus Poir. | CYLA5 |
| Eriophorum ?rousseauanum | Eriophorum ?sorensenii Raymond | ERSO |
| Eriophorum angustifolium ssp. subarcticum | Eriophorum angustifolium Honckeny var. coloratum Hult | ERANC2 |
| Eriophorum angustifolium ssp. subarcticum | Eriophorum angustifolium Honckeny var. giganteum Hult | ERANG2 |
| Eriophorum angustifolium ssp. subarcticum | Eriophorum angustifolium Honckeny var. majus F.W. Schultz | ERANM |
| Eriophorum angustifolium ssp. subarcticum | Eriophorum polystachion L. p.p. | ERPO6 |
| Eriophorum angustifolium ssp. triste | Eriophorum triste (T. Fries) Hadac & A. L?ve | ERTR22 |
| Eriophorum brachyantherum var. brachyantherum | Eriophorum opacum (Bj?rnstr.) Fern. | EROP3 |
| Eriophorum callitrix var. moravium | Eriophorum callitrix Cham. ex C.A. Mey. var. pallidus Hult | ERCAP5 |
| Eriophorum chamissonis | Eriophorum russeolum Fries ex Hartman ssp. rufescens (E. Anders.) Hyl. | ERRUR |
| Eriophorum crinigerum | Scirpus criniger Gray | SCCR6 |
| Eriophorum russeolum var. albidum | Eriophorum chamissonis C.A. Mey. var. albidum (W. Nyl.) Fern. | ERCHA5 |
| Eriophorum scheuchzeri | Eriophorum scheuchzeri Hoppe var. tenuifolium Ohwi | ERSCT |
| Eriophorum tenellum | Eriophorum tenellum Nutt. var. monticola Fern. | ERTEM |
| Eriophorum vaginatum var. spissum | Eriophorum spissum Fern. | ERSP8 |
| Eriophorum vaginatum var. spissum | Eriophorum spissum Fern. var. erubescens (Fern.) Fern. | ERSPE |
| Eriophorum vaginatum var. spissum | Eriophorum vaginatum L. ssp. spissum (Fern.) Hult | ERVAS2 |
| estuary sedge | Carex recta Boott | CARE14 |
| European woodland sedge | Carex sylvatica Huds. | CASY3 |
| fairy beaksedge | Rhynchospora pusilla Chapman ex M.A. Curtis | RHPU3 |
| false hair sedge | Carex bulbostylis Mackenzie | CABU4 |
| false hop sedge | Carex lupuliformis Sartwell ex Dewey | CALU3 |
| false junco | Eleocharis pachystyla (C. Wright) C.B. Clarke | ELPA9 |
| false watermeal | Uncinia brevicaulis Thouars | UNBR |
| fascicled beaksedge | Rhynchospora fascicularis (Michx.) Vahl | RHFA |
| fascicled beaksedge | Rhynchospora fascicularis (Michx.) Vahl var. distans (Michx.) Chapman | RHFAD |
| fascicled beaksedge | Rhynchospora fascicularis (Michx.) Vahl var. fascicularis | RHFAF |
| featherbristle beaksedge | Rhynchospora oligantha Gray | RHOL |
| Fendler's flatsedge | Cyperus fendlerianus Boeckl. | CYFE2 |
| fern flatsedge | Cyperus filicinus Vahl | CYFI |
| Fernald's beaksedge | Rhynchospora fernaldii Gale | RHFE |
| Fernald's sedge | Carex merritt-fernaldii Mackenzie | CAME12 |
| fescue sedge | Carex festucacea Schkuhr ex Willd. | CAFE3 |
| fewflower beaksedge | Rhynchospora rariflora (Michx.) Ell. | RHRA2 |
| fewflower hairsedge | Bulbostylis pauciflora (Liebm.) C.B. Clarke | BUPA |
| fewflower nutrush | Scleria pauciflora Muhl. ex Willd. | SCPA5 |
| fewflower nutrush | Scleria pauciflora Muhl. ex Willd. var. pauciflora | SCPAP2 |
| fewflower sedge | Carex pauciflora Lightf. | CAPA19 |
| fewflower spikerush | Eleocharis quinqueflora (F.X. Hartmann) Schwarz | ELQU2 |
| fewflowered spikerush | Eleocharis oligantha Clarke | ELOL3 |
| fewnerved cottongrass | Eriophorum tenellum Nutt. | ERTE12 |
| fewseed sedge | Carex oligosperma Michx. | CAOL3 |
| fewseed sedge | Carex oligosperma Michx. var. oligosperma | CAOLO3 |
| fewseeded bog sedge | Carex microglochin Wahlenb. | CAMI6 |
| fibrousroot sedge | Carex communis Bailey | CACO7 |
| fibrousroot sedge | Carex communis Bailey var. communis | CACOC4 |
| Fijian sawsedge | Gahnia vitiensis Rendle | GAVI3 |
| Fimbristylis aestivalis | Scirpus aestivalis Retz. | SCAE |
| Fimbristylis annua | Fimbristylis alamosana Fern. | FIAL |
| Fimbristylis annua | Fimbristylis baldwiniana (J.A. Schultes) Torr. | FIBA |
| Fimbristylis annua | Fimbristylis laxa Vahl | FILA3 |
| Fimbristylis annua | Scirpus annuus All. | SCAN8 |
| Fimbristylis autumnalis | Fimbristylis autumnalis (L.) Roemer & J.A. Schultes var. mucronulata (Michx.) Fern. | FIAUM |
| Fimbristylis autumnalis | Fimbristylis geminata (Nees) Kunth | FIGE3 |
| Fimbristylis autumnalis | Scirpus autumnalis L. | SCAU4 |
| Fimbristylis caroliniana | Fimbristylis harperi Britt. | FIHA3 |
| Fimbristylis caroliniana | Scirpus carolinianus Lam. | SCCA9 |
| Fimbristylis castanea | Scirpus castaneus Michx. | SCCA12 |
| Fimbristylis complanata | Scirpus complanatus Retz. | SCCO13 |
| Fimbristylis cymosa ssp. umbellatacapitata | Fimbristylis pycnocephala Hbd. | FIPY |
| Fimbristylis dichotoma | Fimbristylis diphylla (Retz.) Vahl | FIDI2 |
| Fimbristylis dichotoma | Scirpus dichotomus L. | SCDI6 |
| Fimbristylis ferruginea | Scirpus ferrugineus L. | SCFE3 |
| Fimbristylis littoralis | Fimbristylis miliacea auct. non (L.) Vahl [misapplied] | FIMI8 |
| Fimbristylis miliacea | Scirpus miliaceus L. | SCMI9 |
| Fimbristylis puberula var. interior | Fimbristylis interior Britt. | FIIN2 |
| Fimbristylis puberula var. puberula | Fimbristylis anomala Boeckl. | FIAN2 |
| Fimbristylis puberula var. puberula | Fimbristylis castanea (Michx.) Vahl var. puberula (Michx.) Britt. | FICAP |
| Fimbristylis puberula var. puberula | Fimbristylis drummondii (Torr. & Hook. ex Torr.) Boeckl. | FIDR |
| Fimbristylis puberula var. puberula | Fimbristylis puberula (Michx.) Vahl var. drummondii (Torr. & Hook. ex Torr.) Ward | FIPUD |
| Fimbristylis puberula var. puberula | Scirpus puberulus Michx. | SCPU9 |
| Fimbristylis quinquangularis | Scirpus quinquangularis Vahl | SCQU3 |
| Fimbristylis schoenoides | Scirpus schoenoides Retz. | SCSC8 |
| Fimbristylis spathacea | Fimbristylis atollensis St. John | FIAT |
| Fimbristylis spathacea | Fimbristylis cymosa R. Br. ssp. spathacea (Roth) T. Koyama | FICYS |
| Fimbristylis thermalis | Fimbristylis spadicea auct. non (L.) Vahl [misapplied] | FISP |
| Fimbristylis thermalis | Scirpus spadiceus auct. non L. [misapplied] | SCSP3 |
| Fimbristylis tomentosa | Fimbristylis pilosa Vahl | FIPI |
| Fimbristylis vahlii | Scirpus vahlii Lam. | SCVA2 |
| fimbry | Fimbristylis littoralis Gaud. | FILI3 |
| fimbry | Fimbristylis pauciflora R.Br. | FIPA6 |
| fimbry | Fimbristylis tristachya R.Br. | FITR2 |
| fimbry | Fimbristylis Vahl | FIMBR |
| finger flatsedge | Cyperus digitatus Roxb. | CYDI5 |
| firethread sedge | Carex scopulorum Holm var. prionophylla (Holm) L.A. Standley | CASCP |
| fiveangle fimbry | Fimbristylis quinquangularis (Vahl) Kunth | FIQU |
| flat-spiked sedge | Carex planispicata Naczi | CAPL18 |
| flatfruit beaksedge | Rhynchospora compressa Carey ex Chapman | RHCO3 |
| flatleaf flatsedge | Cyperus planifolius L.C. Rich. | CYPL4 |
| flatsedge | Cyperus dioicus I.M. Johnston | CYDI14 |
| flatsedge | Cyperus L. | CYPER |
| flatsedge | Cyperus tenerrimus Liebm. | CYTE12 |
| flatspike sedge | Abildgaardia ovata (Burm. f.) Kral | ABOV |
| flatstem spikerush | Eleocharis compressa Sullivant | ELCO2 |
| flatstem spikerush | Eleocharis compressa Sullivant var. compressa | ELCOC2 |
| Florida beaksedge | Rhynchospora eximia (Nees) Boeckl. | RHEX |
| Florida flatsedge | Cyperus floridanus Britt. | CYFL6 |
| Florida hammock sedge | Carex vexans F.J. Herm. | CAVE10 |
| Florida Keys nutrush | Scleria lithosperma (L.) Sw. | SCLI3 |
| Florida sedge | Carex floridana Schwein. | CAFL5 |
| Florida whitetop | Rhynchospora floridensis (Britt.) H. Pfeiffer | RHFL2 |
| fly beaksedge | Rhynchospora holoschoenoides (L.C. Rich.) Herter | RHHO |
| foothill flatsedge | Cyperus amabilis Vahl | CYAM |
| forest sawsedge | Gahnia beecheyi Mann | GABE |
| forest twigrush | Machaerina restioides (Sw.) Vahl | MARE2 |
| forked fimbry | Fimbristylis dichotoma (L.) Vahl | FIDI |
| fourangle flatsedge | Cyperus tetragonus Ell. | CYTE5 |
| fox sedge | Carex vulpinoidea Michx. | CAVU2 |
| fox sedge | Carex vulpinoidea Michx. var. pycnocephala F.J. Herm. | CAVUP2 |
| fox sedge | Carex vulpinoidea Michx. var. vulpinoidea | CAVUV |
| foxtail flatsedge | Cyperus alopecuroides Rottb. | CYAL6 |
| foxtail sedge | Carex alopecoidea Tuckerman | CAAL8 |
| fragile sedge | Carex membranacea Hook. | CAME4 |
| fragile sheath sedge | Carex fracta Mackenzie | CAFR2 |
| fragrant beaksedge | Rhynchospora odorata C. Wright ex Griseb. | RHOD |
| fragrant flatsedge | Cyperus odoratus L. | CYOD |
| fragrant spikesedge | Kyllinga odorata Vahl | KYOD |
| Frank's sedge | Carex frankii Kunth | CAFR3 |
| Fraser's cymophyllus | Cymophyllus fraserianus (Ker-Gawl.) Kartesz & Gandhi | CYFR4 |
| frightful sedge | Carex molestiformis Reznicek & P. Rothr. | CAMO35 |
| fringed beaksedge | Rhynchospora ciliaris (Michx.) C. Mohr | RHCI |
| fringed cottongrass | Eriophorum crinigerum (Gray) Beetle | ERCR4 |
| fringed nutrush | Scleria ciliata Michx. | SCCI |
| fringed nutrush | Scleria ciliata Michx. var. ciliata | SCCIC |
| fringed nutrush | Scleria ciliata Michx. var. glabra (Chapman) Fairey | SCCIG |
| fringed sedge | Carex crinita Lam. | CACR6 |
| fringed sedge | Carex crinita Lam. var. brevicrinis Fern. | CACRB |
| fringed sedge | Carex crinita Lam. var. crinita | CACRC2 |
| Fuirena breviseta | Fuirena squarrosa Michx. var. breviseta Coville | FUSQB |
| Fuirena bushii | Fuirena ciliata Bush | FUCI |
| Fuirena caerulescens | Fuirena coerulescens Steud. [orthographic variant] | FUCO |
| Fuirena pumila | Fuirena squarrosa Michx. var. pumila Torr. | FUSQP |
| Fuirena pumila | Fuirena torreyana Beck | FUTO |
| Fuirena scirpoidea | Scirpus scirpoideus (Michx.) T. Koyama | SCSC9 |
| Fuirena simplex var. aristulata | Fuirena squarrosa Michx. var. aristulata Torr. | FUSQA |
| Fuirena squarrosa | Fuirena hispida Ell. | FUHI2 |
| Fuirena umbellata | Scirpus fuirenus T. Koyama | SCFU2 |
| Funck's hairsedge | Bulbostylis funckii (Steud.) C.B. Clarke | BUFU |
| fuzzy flatsedge | Cyperus pilosus Vahl | CYPI |
| fuzzy sedge | Carex hirtissima W. Boott | CAHI7 |
| fuzzy wuzzy sedge | Carex hirsutella Mackenzie | CAHI6 |
| Gahnia aspera ssp. globosa | Gahnia globosa Mann | GAGL |
| Gahnia vitiensis ssp. kauaiensis | Gahnia kauaiensis Benl | GAKA2 |
| Gaudichaud's sawsedge | Morelotia gahniiformis Gaud. | MOGA |
| Georgia beaksedge | Rhynchospora harveyi W. Boott var. culixa (Gale) Kral | RHHAC |
| Georgia bulrush | Scirpus georgianus Harper | SCGE2 |
| Geyer's sedge | Carex geyeri Boott | CAGE2 |
| giant beaksedge | Rhynchospora gigantea Link | RHGI |
| giant flatsedge | Cyperus giganteus Vahl | CYGI2 |
| giant sedge | Carex gigantea Rudge | CAGI4 |
| glacial sedge | Carex glacialis Mackenzie | CAGL3 |
| glade fimbry | Fimbristylis brevivaginata Kral | FIBR2 |
| Glades spikerush | Eleocharis bifida S.G. Sm. | ELBI4 |
| globe beaksedge | Rhynchospora globularis (Chapman) Small | RHGL2 |
| globe beaksedge | Rhynchospora globularis (Chapman) Small var. globularis | RHGLG |
| globe beaksedge | Rhynchospora globularis (Chapman) Small var. pinetorum (Britt. & Small ex Small) Gale | RHGLP |
| globe beaksedge | Rhynchospora recognita (Gale) Kral | RHRE8 |
| globe fimbry | Fimbristylis globulosa (Retz.) Kunth | FIGL |
| globe flatsedge | Cyperus echinatus (L.) Wood | CYEC2 |
| globe sedge | Carex perglobosa Mackenzie | CAPE12 |
| glomerate sedge | Carex aggregata Mackenzie | CAAG2 |
| Gmelin's sedge | Carex gmelinii Hook. & Arn. | CAGM |
| Godfrey's sedge | Carex godfreyi Naczi | CAGO3 |
| golden sedge | Carex aurea Nutt. | CAAU3 |
| goosegrass sedge | Carex eleusinoides Turcz. ex C.A. Mey. | CAEL4 |
| graceful sedge | Carex gracillima Schwein. | CAGR2 |
| granite flatsedge | Cyperus granitophilus McVaugh | CYGR10 |
| grassland sedge | Carex divulsa Stokes | CADI19 |
| grassland sedge | Carex divulsa Stokes ssp. divulsa | CADID3 |
| grassleaf sedge | Carex agrostoides Mackenzie | CAAG |
| grasslike fimbry | Fimbristylis miliacea (L.) Vahl | FIMI |
| grasslike sedge | Carex panicea L. | CAPA30 |
| grassyslope arctic sedge | Carex anthoxanthea J.& K. Presl | CAAN10 |
| grassyslope sedge | Carex oreocharis Holm | CAOR |
| Gray's beaksedge | Rhynchospora grayi Kunth | RHGR2 |
| Gray's flatsedge | Cyperus grayi Torr. | CYGR2 |
| Gray's sedge | Carex grayi Carey | CAGR5 |
| Great Plains flatsedge | Cyperus lupulinus (Spreng.) Marcks | CYLU2 |
| Great Plains flatsedge | Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus | CYLUL |
| Great Plains flatsedge | Cyperus lupulinus (Spreng.) Marcks ssp. macilentus (Fern.) Marcks | CYLUM |
| Great Plains sedge | Carex melanostachya Bieb. ex Willd. | CAME10 |
| Great Smoky Mountain sedge | Carex proposita Mackenzie | CAPR10 |
| greater bladder sedge | Carex intumescens Rudge | CAIN12 |
| greater brown sedge | Carex brunnea Thunb. | CABR19 |
| greater straw sedge | Carex normalis Mackenzie | CANO |
| green bulrush | Scirpus atrovirens Willd. | SCAT2 |
| green flatsedge | Cyperus virens Michx. | CYVI2 |
| greenfruit sedge | Carex interrupta Boeckl. | CAIN17 |
| greensheath sedge | Carex feta Bailey | CAFE4 |
| greenwhite sedge | Carex albolutescens Schwein. | CAAL5 |
| Guadalupe Mountain sedge | Carex mckittrickensis P.W. Ball | CAMC |
| Gulf Coast bulrush | Isolepis molesta (M.C. Johnston) S.G. Sm. | ISMO2 |
| Gulf Coast spikerush | Eleocharis cellulosa Torr. | ELCE |
| hairlike sedge | Carex capillaris L. | CACA12 |
| hairlike spikerush | Eleocharis nana Kunth | ELNA |
| hairsedge | Bulbostylis Kunth | BULBO |
| hairy beaksedge | Rhynchospora hispidula (Vahl) Boeckl. | RHHI |
| hairy fimbry | Fimbristylis puberula (Michx.) Vahl | FIPU |
| hairy fimbry | Fimbristylis puberula (Michx.) Vahl var. interior (Britt.) Kral | FIPUI |
| hairy fimbry | Fimbristylis puberula (Michx.) Vahl var. puberula | FIPUP |
| hairy flatsedge | Cyperus dentoniae G. Tucker | CYDE10 |
| hairy nutrush | Scleria scindens Nees ex Kunth | SCSC2 |
| hairy sedge | Carex lacustris Willd. | CALA16 |
| hairy umbrella-sedge | Fuirena squarrosa Michx. | FUSQ |
| hairyfruit sedge | Carex trichocarpa Muhl. ex Willd. | CATR8 |
| halfchaff sedge | Lipocarpha R. Br. | LIPOC |
| Hall's bulrush | Schoenoplectus hallii (Gray) S.G. Sm. | SCHA9 |
| Hall's sedge | Carex halliana Bailey | CAHA2 |
| hammer sedge | Carex hirta L. | CAHI10 |
| hammock sedge | Carex fissa Mackenzie | CAFI5 |
| hammock sedge | Carex fissa Mackenzie var. aristata F.J. Herm. | CAFIA |
| hammock sedge | Carex fissa Mackenzie var. fissa | CAFIF |
| handsome sedge | Carex formosa Dewey | CAFO4 |
| hanging sedge | Carex pendula Huds. | CAPE45 |
| hardstem bulrush | Schoenoplectus acutus (Muhl. ex Bigelow) A.& D. L?ve | SCAC3 |
| hardstem bulrush | Schoenoplectus acutus (Muhl. ex Bigelow) A.& D. L?ve var. acutus | SCACA |
| Harford's sedge | Carex harfordii Mackenzie | CAHA4 |
| Harper's beaksedge | Rhynchospora harperi Small | RHHA2 |
| Harper's fimbry | Fimbristylis perpusilla Harper ex Small & Britt. | FIPE |
| Harper's sedge | Carex leptalea Wahlenb. ssp. harperi (Fern.) W. Stone | CALEH |
| Harvey's beaksedge | Rhynchospora harveyi W. Boott | RHHA |
| Harvey's beaksedge | Rhynchospora harveyi W. Boott var. harveyi | RHHAH |
| haspan flatsedge | Cyperus haspan L. | CYHA |
| Havana nutrush | Scleria havanensis Britt. | SCHA7 |
| Hawai'i beaksedge | Rhynchospora sclerioides Hook. & Arn. | RHSC2 |
| Hawai'i birdcatching sedge | Uncinia uncinata (L. f.) K?kenth. | UNUN |
| Hawai'i fimbry | Fimbristylis hawaiiensis Hbd. | FIHA |
| Hawai'i Island sedge | Oreobolus furcatus Mann | ORFU2 |
| Hawai'i nutrush | Scleria testacea Nees | SCTE6 |
| Hawai'i sedge | Carex alligata Boott | CAAL12 |
| hay sedge | Carex argyrantha Tuckerman | CAAR4 |
| Hayden's sedge | Carex haydenii Dewey | CAHA7 |
| heath sedge | Carex flacca Schreb. | CAFL8 |
| heavy sedge | Carex gravida Bailey | CAGR4 |
| heavy sedge | Carex gravida Bailey var. gravida | CAGRG2 |
| heavy sedge | Carex gravida Bailey var. lunelliana (Mackenzie) F.J. Herm. | CAGRL |
| Heller's sedge | Carex helleri Mackenzie | CAHE6 |
| Henderson's sedge | Carex hendersonii Bailey | CAHE7 |
| Hepburn's sedge | Carex nardina Fries var. hepburnii (Boott) K?kenth. | CANAH |
| Herbst's sedge | Carex wahuensis C.A. Mey. ssp. herbstii T. Koyama | CAWAH |
| hermaphrodite flatsedge | Cyperus hermaphroditus (Jacq.) Standl. | CYHE2 |
| Hillebrand's flatsedge | Cyperus hillebrandii Boeckl. | CYHI |
| Hillebrand's flatsedge | Cyperus hillebrandii Boeckl. var. decipiens (Hbd.) K?kenth. | CYHID |
| Hillebrand's flatsedge | Cyperus hillebrandii Boeckl. var. hillebrandii | CYHIH2 |
| hirsute sedge | Carex complanata Torr. & Hook. | CACO9 |
| Hitchcock's sedge | Carex hitchcockiana Dewey | CAHI8 |
| Holm sedge | Carex heteroneura W. Boott var. chalciolepis (Holm) F.J. Herm. | CAHEC |
| Hood's sedge | Carex hoodii Boott | CAHO5 |
| Hooker's sedge | Carex hookeriana Dewey | CAHO7 |
| hop sedge | Carex lupulina Muhl. ex Willd. | CALU4 |
| Hoppner's sedge | Carex subspathacea Wormsk. ex Hornem. | CASU8 |
| hot springs fimbry | Fimbristylis thermalis S. Wats. | FITH |
| Houghton's flatsedge | Cyperus houghtonii Torr. | CYHO |
| Houghton's sedge | Carex houghtoniana Torr. ex Dewey | CAHO9 |
| Huachuca Mountain sedge | Carex leucodonta Holm | CALE12 |
| Hudson Bay sedge | Carex heleonastes L. f. | CAHE4 |
| Hudson Bay sedge | Carex heleonastes L. f. ssp. heleonastes | CAHEH2 |
| Hudson Bay sedge | Carex heleonastes L. f. ssp. neurochlaena (Holm) B?cher | CAHEN |
| hurricanegrass | Fimbristylis spathacea Roth | FISP2 |
| Idaho sedge | Carex idahoa Bailey | CAID |
| Illinois flatsedge | Cyperus grayoides Mohlenbrock | CYGR11 |
| Indian flatsedge | Cyperus nanus Willd. | CYNA2 |
| Indian flatsedge | Cyperus nanus Willd. var. nanus | CYNAN2 |
| Indian flatsedge | Cyperus nanus Willd. var. subtenuis K?kenth. | CYNAS |
| Indianola beaksedge | Rhynchospora indianolensis Small | RHIN3 |
| inflated narrow-leaf sedge | Carex grisea Wahlenb. | CAGR24 |
| inflatedscale flatsedge | Cyperus aggregatus (Willd.) Endl. | CYAG |
| inland sedge | Carex interior Bailey | CAIN11 |
| Isolepis carinata | Isolepis koilolepis Steud. | ISKO |
| Isolepis carinata | Scirpus carinatus (Hook. & Arn. ex Torr.) Gray, non Sm. | SCCA10 |
| Isolepis carinata | Scirpus koilolepis (Steud.) Gleason | SCKO |
| Isolepis cernua | Scirpus cernuus Vahl p.p. | SCCE6 |
| Isolepis cernua | Scirpus cernuus Vahl ssp. californicus (Torr.) Thorne | SCCEC2 |
| Isolepis cernua | Scirpus cernuus Vahl var. californicus (Torr.) Beetle | SCCEC4 |
| Isolepis fluitans | Scirpus fluitans L. | SCFL10 |
| Isolepis hystrix | Scirpus hystrix Thunb. | SCHY4 |
| Isolepis molesta | Scirpus molestus M.C. Johnston | SCMO2 |
| Isolepis prolifera | Scirpus prolifer Rottb. | SCPR5 |
| Isolepis setacea | Schoenoplectus setaceus (L.) Palla | SCSE |
| Isolepis setacea | Scirpus setaceus L. | SCSE11 |
| Jamaica swamp sawgrass | Cladium mariscus (L.) Pohl ssp. jamaicense (Crantz) K?kenth. | CLMAJ |
| Jamaican beaksedge | Rhynchospora jamaicensis Britt. | RHJA3 |
| James's sedge | Carex jamesii Schwein. | CAJA2 |
| Japanese sedge | Carex kobomugi Ohwi | CAKO2 |
| Javanese flatsedge | Cyperus javanicus Houtt. | CYJA |
| jointed flatsedge | Cyperus articulatus L. | CYAR4 |
| jointed spikesedge | Eleocharis equisetoides (Ell.) Torr. | ELEQ |
| Jones's sedge | Carex jonesii Bailey | CAJO |
| juniper sedge | Carex juniperorum Catling, Reznicek & Crins | CAJU2 |
| Kaibab sedge | Carex curatorum Stacey | CACU4 |
| Kamchatka spikerush | Eleocharis kamtschatica (C.A. Mey.) Komarov | ELKA |
| Kauai flatsedge | Cyperus rockii K?kenth. | CYRO2 |
| Kauai sawsedge | Gahnia vitiensis Rendle ssp. kauaiensis (Benl) T. Koyama | GAVIK |
| Kauai sedge | Carex kauaiensis R.W. Krauss | CAKA2 |
| keeled bulrush | Isolepis carinata Hook. & Arn. ex Torr. | ISCA6 |
| Kellogg's sedge | Carex lenticularis Michx. var. lipocarpa (Holm) L.A. Standley | CALEL3 |
| kidneyshape sedge | Carex reniformis (Bailey) Small | CARE17 |
| Knieskern's beaksedge | Rhynchospora knieskernii Carey | RHKN |
| knob sedge | Carex inversa R. Br. | CAIN49 |
| knotsheath sedge | Carex retrorsa Schwein. | CARE4 |
| knotted spikerush | Eleocharis interstincta (Vahl) Roemer & J.A. Schultes | ELIN2 |
| Kobresia myosuroides | Elyna bellardii (All.) Degl. | ELBE3 |
| Kobresia myosuroides | Kobresia bellardii (All.) K. Koch | KOBE |
| Kobresia sibirica | Elyna sibirica Turcz. ex Ledeb. | ELSI6 |
| Kobresia sibirica | Kobresia bellardii (All.) K. Koch var. macrocarpa (Clokey ex Mackenzie) Harrington | KOBEM |
| Kobresia sibirica | Kobresia hyperborea Porsild | KOHY |
| Kobresia sibirica | Kobresia hyperborea Porsild var. alaskana Duman | KOHYA |
| Kobresia sibirica | Kobresia macrocarpa Clokey ex Mackenzie | KOMA3 |
| Kobresia sibirica | Kobresia schoenoides (C.A. Mey.) Steud. p.p. | KOSC2 |
| Kobresia sibirica | Kobresia schoenoides (C.A. Mey.) Steud. var. lepagei (Duman) Boivin | KOSCL |
| Kobresia simpliciuscula | Carex bipartita All. | CABI10 |
| Kobresia simpliciuscula | Kobresia bipartita (All.) Dalla Torre | KOBI |
| Kobresia simpliciuscula | Kobresia simpliciuscula (Wahlenb.) Mackenzie var. americana Duman | KOSIA |
| Krause's sedge | Carex krausei Boeckl. | CAKR2 |
| Kunth's beaksedge | Rhynchospora kunthii Nees ex Kunth | RHKU |
| Kyllinga brevifolia | Cyperus brevifolius (Rottb.) Endl. ex Hassk. | CYBR |
| Kyllinga gracillima | Cyperus brevifolioides Thieret & Delahoussaye | CYBR2 |
| Kyllinga gracillima | Cyperus brevifolius (Rottb.) Endl. ex Hassk. var. leiolepis (Franch. & Savigny) T. Koyama | CYBRL |
| Kyllinga gracillima | Kyllinga brevifolioides (Thieret & Delahoussaye) G. Tucker | KYBR2 |
| Kyllinga nemoralis | Cyperus kyllingia Endl. | CYKY |
| Kyllinga odorata | Cyperus sesquiflorus (Torr.) Mattf. & K?kenth. ex K?kenth. | CYSE6 |
| Kyllinga odorata | Kyllinga sesquiflora Torr. | KYSE |
| Kyllinga pumila | Cyperus densicaespitosus Mattf. & K?kenth. ex K?kenth. | CYDE15 |
| Kyllinga pumila | Cyperus densicaespitosus Mattf. & K?kenth. ex K?kenth. var. major (Nees) K?kenth. | CYDEM |
| Kyllinga pumila | Cyperus tenuifolius (Steud.) Dandy | CYTE2 |
| Kyllinga pumila | Kyllinga tenuifolia Steud. | KYTE |
| Kyllinga squamulata | Cyperus metzii (Hochst. ex Steud.) Mattf. & K?kenth. ex K?kenth. | CYME3 |
| Kyllinga tibialis | Cyperus peruvianus (Lam.) F.N. Williams | CYPE4 |
| Kyllinga tibialis | Kyllinga peruviana Lam. | KYPE |
| Kyllinga vaginata | Cyperus obtusatus (J. & K. Presl) Mattf. & K?kenth. | CYOB6 |
| Kyllinga vaginata | Kyllinga pungens Link | KYPU2 |
| lagenocarpus | Lagenocarpus Nees | LAGEN2 |
| Lagenocarpus guianensis | Lagenocarpus portoricensis Britt. | LAPO5 |
| lakeshore bulrush | Schoenoplectus lacustris (L.) Palla | SCLA14 |
| lakeshore nutrush | Scleria lacustris C. Wright | SCLA15 |
| lakeshore sedge | Carex lenticularis Michx. | CALE8 |
| lakeshore sedge | Carex lenticularis Michx. var. impressa (Bailey) L.A. Standley | CALEI |
| lakeshore sedge | Carex lenticularis Michx. var. lenticularis | CALEL |
| lakeshore sedge | Carex lenticularis Michx. var. limnophila (Holm) Cronq. | CALEL2 |
| Lanai sawsedge | Gahnia lanaiensis O.& I. Deg. & J. Kern | GALA7 |
| Lapland sedge | Carex lapponica O.F. Lang | CALA15 |
| large beaksedge | Rhynchospora macra (C.B. Clarke ex Britt.) Small | RHMA5 |
| largehead sedge | Carex macrocephala Willd. ex Spreng. | CAMA10 |
| largehead sedge | Carex macrocephala Willd. ex Spreng. var. bracteata Holm | CAMAB2 |
| largehead sedge | Carex macrocephala Willd. ex Spreng. var. macrocephala | CAMAM6 |
| largespike sedge | Carex macrostachys Bertol. | CAMA51 |
| lateral sedge | Carex unilateralis Mackenzie | CAUN3 |
| Latin American flatsedge | Cyperus lentiginosus Millsp. & Chase | CYLE |
| Laurent's sedge | Carex vesicaria L. var. laurentiana Fern. | CAVEL |
| Le Conte's flatsedge | Cyperus lecontei Torr. ex Steud. | CYLE2 |
| leafy bulrush | Scirpus polyphyllus Vahl | SCPO2 |
| lean flatsedge | Cyperus setigerus Torr. & Hook. | CYSE3 |
| Leavenworth's sedge | Carex leavenworthii Dewey | CALE6 |
| Lemmon's sedge | Carex lemmonii W. Boott | CALE7 |
| lesser blackscale sedge | Carex atrosquama Mackenzie | CAAT8 |
| lesser brown sedge | Carex adusta Boott | CAAD2 |
| lesser panicled sedge | Carex diandra Schrank | CADI4 |
| lesser pond sedge | Carex acutiformis Ehrh. | CAAC2 |
| lesser saltmarsh sedge | Carex glareosa Schkuhr ex Wahlenb. | CAGL4 |
| lesser saltmarsh sedge | Carex glareosa Schkuhr ex Wahlenb. ssp. glareosa | CAGLG |
| lesser saltmarsh sedge | Carex glareosa Schkuhr ex Wahlenb. ssp. glareosa var. amphigena Fern. | CAGLA |
| lesser saltmarsh sedge | Carex glareosa Schkuhr ex Wahlenb. ssp. glareosa var. glareosa | CAGLG3 |
| lesser saltmarsh sedge | Carex glareosa Schkuhr ex Wahlenb. ssp. pribylovensis (Macoun) Halliday & Chater | CAGLP |
| Liddon sedge | Carex petasata Dewey | CAPE7 |
| limestone flatsedge | Cyperus fuligineus Chapman | CYFU2 |
| limestone meadow sedge | Carex granularis Muhl. ex Willd. | CAGR3 |
| limestone spikerush | Eleocharis occulata S.G. Sm. | ELOC3 |
| lined sedge | Carex striatula Michx. | CAST17 |
| Lipocarpha ?rehmanii | Scirpus rehmanii Ridley | SCRE8 |
| Lipocarpha aristulata | Hemicarpha aristulata (Coville) Smyth | HEAR7 |
| Lipocarpha aristulata | Hemicarpha micrantha (Vahl) Pax var. aristulata Coville | HEMIA2 |
| Lipocarpha aristulata | Lipocarpha microcephala auct. non Kunth [misapplied] | LIMI4 |
| Lipocarpha drummondii | Hemicarpha drummondii Nees | HEDR3 |
| Lipocarpha drummondii | Hemicarpha micrantha (Vahl) Pax var. drummondii (Nees) Friedland | HEMID3 |
| Lipocarpha drummondii | Scirpus micranthus Vahl var. drummondii (Nees) Mohlenbrock | SCMID |
| Lipocarpha micrantha | Hemicarpha micrantha (Vahl) Pax | HEMI5 |
| Lipocarpha micrantha | Hemicarpha micrantha (Vahl) Pax var. minor (Schrad.) Friedland | HEMIM3 |
| Lipocarpha micrantha | Scirpus micranthus Vahl | SCMI11 |
| Lipocarpha micrantha | Scirpus micranthus Vahl var. minor (Schrad. ex Roemer & J.A. Schultes) Boivin | SCMIM2 |
| Lipocarpha occidentalis | Hemicarpha occidentalis Gray | HEOC3 |
| little beaksedge | Rhynchospora berteroi (Spreng.) C.B. Clarke | RHBE2 |
| little green sedge | Carex viridula Michx. | CAVI5 |
| little green sedge | Carex viridula Michx. ssp. brachyrrhyncha (Celak.) B. Schmid | CAVIB |
| little green sedge | Carex viridula Michx. ssp. brachyrrhyncha (Celak.) B. Schmid var. elatior (Schlecht.) Crins | CAVIE |
| little green sedge | Carex viridula Michx. ssp. oedocarpa (Anderss.) B. Schmid | CAVIO |
| little green sedge | Carex viridula Michx. ssp. viridula | CAVIV |
| littlehead nutrush | Scleria oligantha Michx. | SCOL2 |
| littleleaf sedge | Carex luzulifolia W. Boott | CALU6 |
| littlesnout sedge | Carex microrhyncha Mackenzie | CAMI8 |
| littletooth sedge | Carex microdonta Torr. & Hook. | CAMI5 |
| livid sedge | Carex livida (Wahlenb.) Willd. | CALI |
| livid sedge | Carex livida (Wahlenb.) Willd. var. radicaulis Paine | CALIR |
| Long's bulrush | Scirpus longii Fern. | SCLO |
| Long's sedge | Carex longii Mackenzie | CALO5 |
| long-stolon sedge | Carex inops Bailey | CAIN9 |
| long-stolon sedge | Carex inops Bailey ssp. inops | CAINI3 |
| longawn sedge | Carex macrochaeta C.A. Mey. | CAMA11 |
| longbeak beaksedge | Rhynchospora scirpoides (Torr.) Gray | RHSC5 |
| longbract sedge | Carex extensa Goodenough | CAEX8 |
| longhair sedge | Carex comosa Boott | CACO8 |
| longleaf beaksedge | Rhynchospora longiflora K. Presl | RHLO |
| longstalk sedge | Carex pedunculata Muhl. ex Willd. | CAPE4 |
| looseflower alpine sedge | Carex rariflora (Wahlenb.) Sm. | CARA5 |
| looseflower alpine sedge | Carex rariflora (Wahlenb.) Sm. var. rariflora | CARAR2 |
| loosehead beaksedge | Rhynchospora chalarocephala Fern. & Gale | RHCH2 |
| Louisiana flatsedge | Cyperus sanguinolentus Vahl | CYSA10 |
| Louisiana sedge | Carex louisianica Bailey | CALO6 |
| loving sedge | Carex pityophila Mackenzie | CAPI7 |
| low bulrush | Isolepis cernua (Vahl) Roemer & J.A. Schultes | ISCE |
| low flatsedge | Cyperus pumilus L. | CYPU3 |
| low northern sedge | Carex concinna R. Br. | CACO10 |
| low nutrush | Scleria verticillata Muhl. ex Willd. | SCVE2 |
| low spikesedge | Kyllinga pumila Michx. | KYPU |
| low woodland sedge | Carex socialis Mohlenbrock & Schwegm. | CASO |
| Lyngbye's sedge | Carex lyngbyei Hornem. | CALY3 |
| Machaerina restioides | Cladium restioides (Sw.) Benth. | CLRE4 |
| Machaerina restioides | Mariscus restioides (Sw.) Kuntze | MARE9 |
| Mackenzie's sedge | Carex mackenziei Krecz. | CAMA8 |
| Madagascar flatsedge | Cyperus phaeolepis Cherm. | CYPH |
| malanga | Cladium colocasia (L.) W. Wight | CLCO7 |
| Manatee beaksedge | Rhynchospora megaplumosa Bridges & Orzell | RHME3 |
| Manhart's sedge | Carex manhartii Bryson | CAMA33 |
| manyflower flatsedge | Cyperus lancastriensis Porter ex Gray | CYLA3 |
| manyflower sedge | Carex pluriflora Hult | CAPL6 |
| manyhead sedge | Carex sychnocephala Carey | CASY |
| manyrib sedge | Carex multicostata Mackenzie | CAMU6 |
| manyspike flatsedge | Cyperus polystachyos Rottb. | CYPO |
| manyspike flatsedge | Cyperus polystachyos Rottb. var. miser K?kenth. | CYPOM |
| manyspike flatsedge | Cyperus polystachyos Rottb. var. polystachyos | CYPOP2 |
| manystem sedge | Carex multicaulis Bailey | CAMU5 |
| Mariposa sedge | Carex mariposana Bailey ex Mackenzie | CAMA13 |
| marsh fimbry | Fimbristylis castanea (Michx.) Vahl | FICA4 |
| marsh flatsedge | Cyperus pseudovegetus Steud. | CYPS |
| marsh straw sedge | Carex hormathodes Fern. | CAHO8 |
| matamat | Rhynchospora corymbosa (L.) Britt. | RHCO4 |
| matted spikerush | Eleocharis intermedia J.A. Schultes | ELIN |
| Maui flatsedge | Cyperus neokunthianus K?kenth. | CYNE2 |
| Maui sedge | Carex thunbergii Steud. | CATH6 |
| Mead's sedge | Carex meadii Dewey | CAME2 |
| meadow sedge | Carex praticola Rydb. | CAPR7 |
| Mendocino sedge | Carex mendocinensis Olney | CAME5 |
| Mertens's sedge | Carex mertensii Prescott ex Bong. | CAME6 |
| Meyen's flatsedge | Cyperus meyenianus Kunth | CYME4 |
| Meyen's sedge | Carex meyenii Nees | CAME14 |
| Meyen's twigrush | Machaerina mariscoides (Gaud.) J. Kern ssp. meyenii (Kunth) T. Koyama | MAMAM |
| Michaux's sedge | Carex michauxiana Boeckl. | CAMI15 |
| midland sedge | Carex mesochorea Mackenzie | CAME13 |
| millet beaksedge | Rhynchospora miliacea (Lam.) Gray | RHMI5 |
| mingled beaksedge | Rhynchospora mixta Britt. | RHMI9 |
| miniature flatsedge | Cyperus prolifer Lam. | CYPR17 |
| Missouri sedge | Carex missouriensis P. Rothr. & Reznicek | CAMI50 |
| Mitchell's sedge | Carex mitchelliana M.A. Curtis | CAMI18 |
| Molokai flatsedge | Cyperus phleoides (Nees ex Kunth) Hbd. | CYPH2 |
| Molokai flatsedge | Cyperus phleoides (Nees ex Kunth) Hbd. var. hawaiensis (Mann) K?kenth. | CYPHH |
| Molokai flatsedge | Cyperus phleoides (Nees ex Kunth) Hbd. var. phleoides | CYPHP |
| Molokai sedge | Carex montis-eeka Hbd. | CAMO12 |
| Morelotia gahniiformis | Gahnia gahniiformis (Gaud.) Heller | GAGA3 |
| Morelotia gahniiformis | Machaerina gahniiformis (Gaud.) J. Kern | MAGA |
| mosquito beadsedge | Rhynchospora crinipes Gale | RHCR3 |
| mosquito bulrush | Scirpus hattorianus Makino | SCHA3 |
| mosquito flatsedge | Cyperus prolixus Kunth | CYPR2 |
| mosquito nutrush | Scleria scabriuscula Schlecht. [excluded] | SCSC6 |
| mountain sedge | Carex scopulorum Holm | CASC12 |
| mountain sedge | Carex scopulorum Holm var. bracteosa (Bailey) F.J. Herm. | CASCB |
| mountain sedge | Carex scopulorum Holm var. scopulorum | CASCS2 |
| mountain spikerush | Eleocharis montana (Kunth) Roemer & J.A. Schultes | ELMO |
| mud sedge | Carex limosa L. | CALI7 |
| Muehlenberg's nutrush | Scleria muehlenbergii Steud. | SCMU8 |
| Muhlenberg's sedge | Carex muehlenbergii Schkuhr ex Willd. | CAMU4 |
| Muhlenberg's sedge | Carex muehlenbergii Schkuhr ex Willd. var. enervis Boott | CAMUE |
| Muhlenberg's sedge | Carex muehlenbergii Schkuhr ex Willd. var. muehlenbergii | CAMUM |
| Muskingum sedge | Carex muskingumensis Schwein. | CAMU9 |
| Mutis's flatsedge | Cyperus mutisii (Kunth) Griseb. | CYMU4 |
| naked sedge | Carex nudata W. Boott | CANU5 |
| narrowfruit horned beaksedge | Rhynchospora inundata (Oakes) Fern. | RHIN7 |
| narrowfruit sedge | Carex specifica Bailey | CASP4 |
| native sedge | Carex vernacula Bailey | CAVE5 |
| Navajo sedge | Carex specuicola J.T. Howell | CASP9 |
| nearlyblack sedge | Carex subnigricans Stacey | CASU7 |
| Nebraska sedge | Carex nebrascensis Dewey | CANE2 |
| necklace sedge | Carex projecta Mackenzie | CAPR9 |
| necklace spike sedge | Carex ormostachya Wieg. | CAOR5 |
| needle beaksedge | Rhynchospora capillacea Torr. | RHCA11 |
| needle spikerush | Eleocharis acicularis (L.) Roemer & J.A. Schultes | ELAC |
| needle spikerush | Eleocharis acicularis (L.) Roemer & J.A. Schultes var. acicularis | ELACA |
| needleleaf sedge | Carex duriuscula C.A. Mey. | CADU6 |
| Nelson's sedge | Carex nelsonii Mackenzie | CANE3 |
| nerveless woodland sedge | Carex leptonervia (Fern.) Fern. | CALE11 |
| netted nutrush | Scleria reticularis Michx. | SCRE |
| Nevada bulrush | Scirpus nevadensis S. Wats. | SCNE |
| New England bulrush | Schoenoplectus novae-angliae (Britt.) M.T. Strong | SCNO5 |
| New England sedge | Carex novae-angliae Schwein. | CANO4 |
| nodding beaksedge | Rhynchospora inexpansa (Michx.) Vahl | RHIN4 |
| nodding sedge | Carex gynandra Schwein. | CAGY4 |
| northeastern sedge | Carex cryptolepis Mackenzie | CACR9 |
| northern bog sedge | Carex gynocrates Wormsk. ex Drej. | CAGY2 |
| northern cluster sedge | Carex arcta Boott | CAAR2 |
| northern long sedge | Carex folliculata L. | CAFO6 |
| northern sedge | Carex deflexa Hornem. | CADE7 |
| northern singlespike sedge | Carex scirpoidea Michx. | CASC10 |
| northern singlespike sedge | Carex scirpoidea Michx. ssp. scirpoidea | CASCS8 |
| northland cottonsedge | Eriophorum brachyantherum Trautv. & C.A. Mey. | ERBR6 |
| northland cottonsedge | Eriophorum brachyantherum Trautv. & C.A. Mey. var. brachyantherum | ERBRB6 |
| Northwest Territory sedge | Carex utriculata Boott | CAUT |
| northwestern sedge | Carex concinnoides Mackenzie | CACO11 |
| Norway sedge | Carex norvegica Retz. | CANO2 |
| Norway sedge | Carex norvegica Retz. ssp. norvegica | CANON2 |
| nutgrass | Cyperus rotundus L. | CYRO |
| nutrush | Scleria Berg. | SCLER2 |
| nutrush | Scleria biflora Roxb. | SCBI2 |
| nutrush | Scleria caricina Benth. | SCCA24 |
| nutrush | Scleria ciliaris Nees | SCCI6 |
| nutrush | Scleria laevis Willd. | SCLA12 |
| nutrush | Scleria laxa R.Br. | SCLA13 |
| nutrush | Scleria novae-hollandiae Boeck. | SCNO4 |
| nutrush | Scleria polycarpa Boeck. | SCPO8 |
| nutrush | Scleria rugosa R.Br. | SCRU8 |
| nutrush | Scleria scrobiculata Nees & Meyen | SCSC11 |
| nutrush | Scleria sumatrensis Retz. | SCSU9 |
| Oahu flatsedge | Cyperus hypochlorus Hbd. | CYHY2 |
| Oahu flatsedge | Cyperus hypochlorus Hbd. var. ?kauaiensis K?kenth. | CYHYK |
| Oahu flatsedge | Cyperus hypochlorus Hbd. var. brevior K?kenth. | CYHYB |
| Oahu flatsedge | Cyperus hypochlorus Hbd. var. hypochlorus | CYHYH |
| Oahu sedge | Carex wahuensis C.A. Mey. | CAWA |
| Oahu sedge | Carex wahuensis C.A. Mey. ssp. rubiginosa (R.W. Krauss) T. Koyama | CAWAR2 |
| Oahu sedge | Carex wahuensis C.A. Mey. ssp. wahuensis | CAWAW |
| obtuse sedge | Carex obtusata Lilj. | CAOB4 |
| Oklahoma sedge | Carex oklahomensis Mackenzie | CAOK |
| Old World flatsedge | Cyperus cyperinus (Retz.) Sur. | CYCY |
| Olney's hairy sedge | Carex gynodynama Olney | CAGY3 |
| oneflower beaksedge | Rhynchospora uniflora Boeckl. | RHUN |
| oneflower flatsedge | Cyperus retroflexus Buckl. | CYRE14 |
| onescale spikerush | Eleocharis uniglumis (Link) J.A. Schultes | ELUN |
| onespike beaksedge | Rhynchospora solitaria Harper | RHSO |
| openfield sedge | Carex conoidea Schkuhr ex Willd. | CACO14 |
| oreobolus | Oreobolus R. Br. | OREOB |
| Orono sedge | Carex oronensis Fern. | CAOR6 |
| Ouachita Mountain sedge | Carex ouachitana Kral, Manhart & Bryson | CAOU |
| oval-leaf sedge | Carex cephalophora Muhl. ex Willd. | CACE |
| ovate spikerush | Eleocharis ovata (Roth) Roemer & J.A. Schultes | ELOV |
| ovateleaf flatsedge | Cyperus ovatus Baldwin | CYOV3 |
| Owan's flatsedge | Cyperus owanii Boeck | CYOW2 |
| owlfruit sedge | Carex stipata Muhl. ex Willd. | CAST5 |
| owlfruit sedge | Carex stipata Muhl. ex Willd. var. stipata | CASTS3 |
| Oxycaryum cubense | Scirpus cubensis Poepp. & Kunth | SCCU |
| Ozark sedge | Carex ozarkana P. Rothr. & Reznicek | CAOZ2 |
| Pacific bristlystalked sedge | Carex leptalea Wahlenb. ssp. pacifica Calder & Taylor | CALEP2 |
| Pacific brownish sedge | Carex brunnescens (Pers.) Poir. ssp. pacifica Kalela | CABRP2 |
| Pacific island flatsedge | Cyperus cyperoides (L.) Kuntze | CYCY2 |
| pale beaksedge | Rhynchospora pallida M.A. Curtis | RHPA |
| pale sedge | Carex pallescens L. | CAPA17 |
| pale spikerush | Eleocharis macrostachya Britt. | ELMA5 |
| pallid flatsedge | Cyperus pallidicolor (K?kenth.) G. Tucker | CYPA24 |
| panicled bulrush | Scirpus microcarpus J.& K. Presl | SCMI2 |
| papyrus | Cyperus papyrus L. | CYPA8 |
| parachute sedge | Carex tonsa (Fern.) Bickn. var. rugosperma (Mackenzie) Crins | CATOR |
| parasol sedge | Carex umbellata Schkuhr ex Willd. | CAUM4 |
| Parish's flatsedge | Cyperus parishii Britt. | CYPA4 |
| Parish's spikerush | Eleocharis parishii Britt. | ELPA4 |
| Parry's sedge | Carex parryana Dewey | CAPA18 |
| Parry's sedge | Carex parryana Dewey var. brevisquama F.J. Herm. | CAPAB |
| Parry's sedge | Carex parryana Dewey var. parryana | CAPAP3 |
| pasture spikesedge | Kyllinga gracillima Miq. | KYGR |
| Payson's sedge | Carex paysonis Clokey | CAPA31 |
| Peck's sedge | Carex peckii Howe | CAPE11 |
| Pennsylvania sedge | Carex pensylvanica Lam. | CAPE6 |
| Peruvian spikesedge | Kyllinga tibialis Ledeb. | KYTI |
| Piedmont flatsedge | Cyperus distans L. f. | CYDI7 |
| pine barren beaksedge | Rhynchospora pineticola C.B. Clarke | RHPI5 |
| pine barren flatsedge | Cyperus retrorsus Chapman | CYRE5 |
| pine barren flatsedge | Cyperus retrorsus Chapman var. retrorsus | CYRER2 |
| pine barren flatsedge | Cyperus retrorsus Chapman var. robustus (Boeckl.) K?kenth. | CYRER |
| pine barren sedge | Carex turgescens Torr. | CATU4 |
| pine flatsedge | Cyperus hypopitys G. Tucker | CYHY6 |
| pineland beaksedge | Rhynchospora perplexa Britt. | RHPE2 |
| Piper's sedge | Carex piperi Mackenzie | CAPI6 |
| plains flatsedge | Cyperus onerosus M.C. Johnston | CYON |
| plantainleaf sedge | Carex plantaginea Lam. | CAPL4 |
| Plukenet's flatsedge | Cyperus plukenetii Fern. | CYPL3 |
| plumed beaksedge | Rhynchospora plumosa Ell. | RHPL3 |
| polar sedge | Carex arctiformis Mackenzie | CAAR14 |
| Polynesian twigrush | Machaerina angustifolia (Gaud.) T. Koyama | MAAN |
| pond flatsedge | Cyperus ochraceus Vahl | CYOC2 |
| poorland flatsedge | Cyperus compressus L. | CYCO |
| Porter's fringed sedge | Carex crinita Lam. var. porteri (Olney) Fern. | CACRP |
| prairie sedge | Carex prairea Dewey ex Wood | CAPR6 |
| prairie straw sedge | Carex suberecta (Olney) Britt. | CASU5 |
| Presl's sedge | Carex preslii Steud. | CAPR8 |
| pretty sedge | Carex woodii Dewey | CAWO2 |
| prickly bog sedge | Carex atlantica Bailey | CAAT4 |
| prickly bog sedge | Carex atlantica Bailey ssp. atlantica | CAATA2 |
| prickly bog sedge | Carex atlantica Bailey ssp. capillacea (Bailey) Reznicek | CAATC |
| prickly sedge | Carex spicata Huds. | CASP10 |
| proliferating bulrush | Isolepis prolifera R. Br. | ISPR2 |
| prune-fruit sedge | Carex corrugata Fern. | CACO22 |
| pubescent sedge | Carex hirtifolia Mackenzie | CAHI5 |
| Puerto Rico fimbry | Fimbristylis complanata (Retz.) Link | FICO |
| Purdie's nutrush | Scleria purdiei C.B. Clarke [excluded] | SCPU7 |
| purple sedge | Carex purpurifera Mackenzie | CAPU12 |
| purple spikerush | Eleocharis atropurpurea (Retz.) J.& K. Presl | ELAT |
| Pyrenean sedge | Carex pyrenaica Wahlenb. | CAPY3 |
| Pyrenean sedge | Carex pyrenaica Wahlenb. ssp. micropoda (C.A. Mey.) Hult | CAPYM |
| Pyrenean sedge | Carex pyrenaica Wahlenb. ssp. pyrenaica | CAPYP |
| Queensland sedge | Cyperus hyalinus Vahl | CYHY7 |
| quill beaksedge | Rhynchospora tenuis Link | RHTE2 |
| quill sedge | Carex tenera Dewey | CATE3 |
| quill spikerush | Eleocharis nitida Fern. | ELNI |
| racemed beaksedge | Rhynchospora racemosa C. Wright ex Sauvalle | RHRA3 |
| Radford's sedge | Carex radfordii Gaddy | CARA20 |
| Ramensk's sedge | Carex ramenskii Komarov | CARA4 |
| ravenfoot sedge | Carex crus-corvi Shuttlw. ex Kunze | CACR8 |
| ravine sedge | Carex impressinervia Bryson, Kral & Manhart | CAIM2 |
| Raymond's sedge | Carex raymondii Calder | CARA9 |
| Raynolds's sedge | Carex raynoldsii Dewey | CARA6 |
| razor grass | Scleria secans (L.) Urban | SCSE4 |
| reclining bulrush | Scirpus flaccidifolius (Fern.) Schuyler | SCFL2 |
| red beaksedge | Rhynchospora rufa (Nees) Boeckl. | RHRU2 |
| red bulrush | Blysmus rufus (Huds.) Link | BLRU |
| red cottongrass | Eriophorum russeolum Fries ex Hartman | ERRU2 |
| red cottongrass | Eriophorum russeolum Fries ex Hartman var. albidum W. Nyl. | ERRUA |
| red cottongrass | Eriophorum russeolum Fries ex Hartman var. majus Sommier | ERRUM |
| redroot flatsedge | Cyperus erythrorhizos Muhl. | CYER2 |
| reflexed flatsedge | Cyperus refractus Engelm. ex Boeckl. | CYRE3 |
| reflexed sedge | Carex retroflexa Muhl. ex Willd. | CARE9 |
| Rehman's halfchaff sedge | Lipocarpha ?rehmanii (Ridley) Goetghebeur | LIRE12 |
| Remirea maritima | Cyperus pedunculatus (R. Br.) J. Kern | CYPE2 |
| Remirea maritima | Mariscus pedunculatus (R. Br.) T. Koyama | MAPE6 |
| Reverchon's spikerush | Eleocharis reverchonii Svens. | ELRE |
| rhynchospora | Rhynchospora rubra Domin | RHRU5 |
| Rhynchospora alba | Rhynchospora luquillensis Britt. | RHLU2 |
| Rhynchospora berteroi | Hypolytrum berteroi Spreng. | HYBE |
| Rhynchospora berteroi | Rhynchospora pusilla (Sw.) Griseb., non Chapman ex M.A. Curtis | RHPU5 |
| Rhynchospora brachychaeta | Rhynchospora blauneri Britt. | RHBL3 |
| Rhynchospora breviseta | Rhynchospora oligantha Gray var. breviseta Gale | RHOLB |
| Rhynchospora caduca | Rhynchospora patula Gray | RHPA4 |
| Rhynchospora capillacea | Rhynchospora capillacea Torr. var. leviseta E.J. Hill ex Gray | RHCAL |
| Rhynchospora capillacea | Rhynchospora smallii Britt. | RHSM2 |
| Rhynchospora capitellata | Rhynchospora glomerata (L.) Vahl var. capitellata (Michx.) K?kenth. | RHGLC |
| Rhynchospora capitellata | Rhynchospora glomerata (L.) Vahl var. minor Britt. | RHGLM |
| Rhynchospora cephalantha | Rhynchospora axillaris (Lam.) Britt. | RHAX2 |
| Rhynchospora cephalantha | Rhynchospora cephalantha Gray var. attenuata Gale | RHCEA |
| Rhynchospora cephalantha | Rhynchospora cephalantha Gray var. pleiocephala Fern. & Gale | RHCEP |
| Rhynchospora chinensis ssp. spiciformis | Rhynchospora spiciformis Hbd. | RHSP |
| Rhynchospora ciliaris | Rhynchospora rappiana Small | RHRA7 |
| Rhynchospora colorata | Dichromena colorata (L.) A.S. Hitchc. | DICO |
| Rhynchospora colorata | Rhynchospora drummondiana Steud. | RHDR |
| Rhynchospora colorata | Rhynchospora stellata (Lam.) Griseb. | RHST |
| Rhynchospora colorata | Schoenus coloratus L. | SCCO14 |
| Rhynchospora corniculata | Rhynchospora corniculata (Lam.) Gray var. interior Fern. | RHCOI |
| Rhynchospora corymbosa | Scirpus corymbosus L. | SCCO12 |
| Rhynchospora debilis | Rhynchospora trichodes auct. non C.B. Clarke [misapplied] | RHTR3 |
| Rhynchospora elliottii | Rhynchospora schoenoides (Ell.) Wood | RHSC4 |
| Rhynchospora eximia | Psilocarya schiedeana (Nees) Liebm. | PSSC4 |
| Rhynchospora fascicularis var. distans | Rhynchospora distans (Michx.) Vahl | RHDI4 |
| Rhynchospora fascicularis var. fascicularis | Schoenus fascicularis Michx. | SCFA |
| Rhynchospora filifolia | Rhynchospora fuscoides C.B. Clarke | RHFU2 |
| Rhynchospora filiformis | Rhynchospora podosperma C. Wright ex Sauvalle | RHPO2 |
| Rhynchospora floridensis | Dichromena floridensis Britt. | DIFL3 |
| Rhynchospora globularis var. pinetorum | Rhynchospora pinetorum Britt. & Small ex Small | RHPI2 |
| Rhynchospora globularis var. saxicola | Rhynchospora saxicola Small | RHSA |
| Rhynchospora glomerata | Rhynchospora cymosa Ell. | RHCY3 |
| Rhynchospora glomerata | Rhynchospora glomerata (L.) Vahl var. angusta Gale | RHGLA |
| Rhynchospora glomerata | Rhynchospora glomerata (L.) Vahl var. paniculata Chapman | RHGLP2 |
| Rhynchospora harveyi var. culixa | Rhynchospora culixa Gale | RHCU2 |
| Rhynchospora harveyi var. harveyi | Rhynchospora earlei Britt. | RHEA |
| Rhynchospora harveyi var. harveyi | Rhynchospora planckii Britt. | RHPL4 |
| Rhynchospora holoschoenoides | Rhynchospora cyperoides Mart. | RHCY2 |
| Rhynchospora indianolensis | Rhynchospora scutellata auct. non Griseb. [misapplied] | RHSC7 |
| Rhynchospora latifolia | Dichromena latifolia Baldw. ex Ell. | DILA2 |
| Rhynchospora leptocarpa | Rhynchospora glomerata (L.) Vahl var. leptocarpa Chapman ex Britt. | RHGLL |
| Rhynchospora lindeniana var. bahamensis | Rhynchospora bahamensis Britt. | RHBA5 |
| Rhynchospora macrostachya | Rhynchospora macrostachya Torr. ex Gray var. colpophila Fern. & Gale | RHMAC |
| Rhynchospora marisculus | Rhynchospora borinquensis Britt. | RHBO2 |
| Rhynchospora megalocarpa | Rhynchospora dodecandra Baldw. ex Gray | RHDO |
| Rhynchospora microcarpa | Rhynchospora edisoniana Britt. ex Small | RHED2 |
| Rhynchospora microcarpa | Rhynchospora sulcata Gale | RHSU |
| Rhynchospora microcephala | Rhynchospora cephalantha Gray var. microcephala (Britt.) K?kenth. | RHCEM |
| Rhynchospora miliacea | Schoenus miliaceus Lam. | SCMI10 |
| Rhynchospora mixta | Rhynchospora prolifera Small | RHPR3 |
| Rhynchospora nervosa ssp. ciliata | Dichromena ciliata Vahl | DICI4 |
| Rhynchospora nitens | Psilocarya nitens (Vahl) Wood | PSNI |
| Rhynchospora nitens | Psilocarya portoricensis Britt. | PSPO3 |
| Rhynchospora nivea | Dichromena nivea (Boeckl.) Boeckl. ex Britt. | DINI |
| Rhynchospora odorata | Rhynchospora stipitata Chapman | RHST4 |
| Rhynchospora perplexa | Rhynchospora perplexa Britt. var. virginiana Fern. | RHPEV |
| Rhynchospora pineticola | Rhynchospora intermedia (Chapman) Britt. | RHIN5 |
| Rhynchospora plumosa | Rhynchospora semiplumosa Gray | RHSE5 |
| Rhynchospora pusilla | Rhynchospora bruneri Britt. | RHBR3 |
| Rhynchospora pusilla | Rhynchospora intermixta C. Wright | RHIN6 |
| Rhynchospora radicans ssp. microcephala | Dichromena microcephala Bertero ex Spreng. | DIMI7 |
| Rhynchospora radicans ssp. microcephala | Dichromena radicans Schlecht. & Cham. p.p. | DIRA3 |
| Rhynchospora rariflora | Schoenus rariflorus Michx. | SCRA3 |
| Rhynchospora recognita | Rhynchospora globularis (Chapman) Small var. recognita Gale | RHGLR |
| Rhynchospora recognita | Rhynchospora obliterata Gale | RHOB2 |
| Rhynchospora rufa | Psilocarya rufa Nees | PSRU |
| Rhynchospora rugosa ssp. lavarum | Rhynchospora lavarum Gaud. | RHLA6 |
| Rhynchospora rugosa ssp. rugosa | Rhynchospora glauca Vahl | RHGL4 |
| Rhynchospora rugosa ssp. rugosa | Schoenus rugosus Vahl | SCRU3 |
| Rhynchospora scirpoides | Psilocarya corymbifera (C. Wright) Britt. | PSCO8 |
| Rhynchospora scirpoides | Psilocarya corymbiformis Benth. | PSCO4 |
| Rhynchospora scirpoides | Psilocarya scirpoides Torr. | PSSC2 |
| Rhynchospora scirpoides | Psilocarya scirpoides Torr. var. grimesii Fern. & Grisc. | PSSCG |
| Rhynchospora tenerrima | Rhynchospora setacea (Berg.) Boeckl. | RHSE2 |
| Rhynchospora uniflora | Rhynchospora elongata Boeckl. | RHEL2 |
| Rhynchospora wrightiana | Rhynchospora tenuis Baldw. ex Gray | RHTE4 |
| ribbed sedge | Carex virescens Muhl. ex Willd. | CAVI4 |
| ricefield flatsedge | Cyperus iria L. | CYIR |
| Richardson's sedge | Carex richardsonii R. Br. | CARI |
| richwoods sedge | Carex oligocarpa Schkuhr ex Willd. | CAOL2 |
| rigid sedge | Carex tetanica Schkuhr | CATE6 |
| Rio Grande sedge | Cyperus floribundus (K?k.) Carter & Jones | CYFL10 |
| Rio Grande spikerush | Eleocharis austrotexana M.C. Johnston | ELAU |
| river bulrush | Schoenoplectus fluviatilis (Torr.) M.T. Strong | SCFL11 |
| riverbank sedge | Carex stenoptila F.J. Herm. | CAST4 |
| riverswamp nutrush | Scleria hirtella Sw. | SCHI3 |
| roadside flatsedge | Cyperus sphacelatus Rottb. | CYSP3 |
| Roan Mountain sedge | Carex roanensis F.J. Herm. | CARO10 |
| Robbins's spikerush | Eleocharis robbinsii Oakes | ELRO |
| rock bulrush | Schoenoplectus juncoides (Roxb.) Palla | SCJU2 |
| rock sedge | Carex saxatilis L. | CASA10 |
| rockdwelling sedge | Carex petricosa Dewey | CAPE8 |
| Rocky Mountain bulrush | Schoenoplectus saximontanus (Fern.) Raynal | SCSA8 |
| Rocky Mountain sedge | Carex saximontana Mackenzie | CASA9 |
| Rolland's bulrush | Trichophorum pumilum (Vahl) Schinz & Thellung | TRPU18 |
| rooted spikerush | Eleocharis radicans (A. Dietr.) Kunth | ELRA |
| Ross's sedge | Carex rossii Boott | CARO5 |
| rosy sedge | Carex rosea Schkuhr ex Willd. | CARO22 |
| rough flatsedge | Cyperus retrofractus (L.) Torr. | CYRE4 |
| rough hairsedge | Bulbostylis hirta (Thunb.) Svens. | BUHI |
| rough sedge | Carex muricata L. | CAMU7 |
| round sawsedge | Gahnia aspera Spreng. | GAAS5 |
| round sawsedge | Gahnia aspera Spreng. ssp. globosa (Mann) J. Kern | GAASG |
| round sedge | Carex rotundata Wahlenb. | CARO7 |
| roundfruit sedge | Carex globosa Boott | CAGL7 |
| roundhead bulrush | Scirpoides holoschoenus (L.) Soj | SCHO6 |
| royal flatsedge | Cyperus elegans L. | CYEL |
| rufous bulrush | Scirpus pendulus Muhl. | SCPE4 |
| Rusby's flatsedge | Cyperus sphaerolepis Boeckl. | CYSP7 |
| Rusby's sedge | Carex vallicola Dewey var. rusbyi (Mackenzie) F.J. Herm. | CAVAR |
| rush hairsedge | Bulbostylis juncoides (Vahl) K?kenth. | BUJU |
| Ruth's sedge | Carex ruthii Mackenzie | CARU6 |
| ryegrass sedge | Carex loliacea L. | CALO4 |
| salt sedge | Carex hassei Bailey | CAHA5 |
| saltmarsh spikerush | Eleocharis halophila (Fern. & Brack.) Fern. & Brack. | ELHA2 |
| saltmarsh umbrella-sedge | Fuirena breviseta (Coville) Coville | FUBR |
| San Diego sedge | Carex spissa Bailey | CASP6 |
| San Luis Obispo sedge | Carex obispoensis Stacey | CAOB2 |
| sand sedge | Carex arenaria L. | CAAR16 |
| sand sedge | Carex perdentata S.D. Jones | CAPE40 |
| sand spikerush | Eleocharis montevidensis Kunth | ELMO2 |
| sanddune sedge | Carex pansa Bailey | CAPA16 |
| sandswamp whitetop | Rhynchospora latifolia (Baldw. ex Ell.) Thomas | RHLA7 |
| sandy field hairsedge | Bulbostylis stenophylla (Ell.) C.B. Clarke | BUST |
| sandyfield beaksedge | Rhynchospora megalocarpa Gray | RHME |
| sandywoods sedge | Carex dasycarpa Muhl. | CADA3 |
| Santa Barbara sedge | Carex barbarae Dewey | CABA4 |
| Santa Cruz sedge | Carex saliniformis Mackenzie | CASA6 |
| Sartwell's sedge | Carex sartwellii Dewey | CASA8 |
| Sartwell's sedge | Carex sartwellii Dewey var. sartwellii | CASAS5 |
| Sartwell's sedge | Carex sartwellii Dewey var. stenorrhyncha F.J. Herm. | CASAS6 |
| savannah beaksedge | Rhynchospora debilis Gale | RHDE2 |
| sawgrass | Cladium P. Br. | CLADI |
| sawsedge | Gahnia J.R. & G. Forst. | GAHNI |
| scallion grass | Eleocharis mutata (L.) Roemer & J.A. Schultes | ELMU2 |
| Schaffner's hairsedge | Bulbostylis schaffneri (Boeckl.) C.B. Clarke | BUSC2 |
| Schaffner's spikerush | Eleocharis schaffneri Boeckl. | ELSC8 |
| Schiede's sedge | Carex muriculata F.J. Herm. | CAMU8 |
| Schoenoplectus ?carinatus | Schoenoplectus ?scheuchzeri (Bruegger) Palla ex Janchen, nomen invalid. | SCSC12 |
| Schoenoplectus ?carinatus | Scirpus ?kuekenthalianus Junge 1905 | SCKU2 |
| Schoenoplectus ?carinatus | Scirpus scheuchzeri Bruegger 1882, non Vitman | SCSC13 |
| Schoenoplectus ?contortus | Scirpus ?contortus (Eames) T. Koyama | SCCO2 |
| Schoenoplectus ?oblongus | Schoenoplectus ?oblongatus (T. Koyama) Soj?k [orthographic error] | SCOB7 |
| Schoenoplectus ?oblongus | Scirpus ?oblongus T. Koyama | SCOB2 |
| Schoenoplectus ?steinmetzii | Scirpus steinmetzii Fern. | SCST6 |
| Schoenoplectus acutus var. acutus | Schoenoplectus lacustris (L.) Palla ssp. acutus (Muhl. ex Bigelow) A.& D. L?ve | SCLAA |
| Schoenoplectus acutus var. acutus | Scirpus acutus Muhl. ex Bigelow | SCAC |
| Schoenoplectus acutus var. acutus | Scirpus lacustris L. p.p. | SCLA80 |
| Schoenoplectus acutus var. occidentalis | Schoenoplectus rubiginosus (Beetle) Soj?k p.p. | SCRU9 |
| Schoenoplectus acutus var. occidentalis | Scirpus acutus Muhl. ex Bigelow var. occidentalis (S. Wats.) Beetle | SCACO4 |
| Schoenoplectus acutus var. occidentalis | Scirpus occidentalis (S. Wats.) Chase | SCOC5 |
| Schoenoplectus acutus var. occidentalis | Scirpus rubiginosus Beetle p.p. | SCRU11 |
| Schoenoplectus americanus | Scirpus americanus Pers. | SCAM2 |
| Schoenoplectus americanus | Scirpus chilensis Nees & Meyen ex Kunth | SCCH5 |
| Schoenoplectus americanus | Scirpus conglomeratus Kunth | SCCO17 |
| Schoenoplectus americanus | Scirpus olneyi Gray | SCOL |
| Schoenoplectus americanus | Scirpus pungens Vahl var. longisetus Benth. & F. Muell. | SCPUL2 |
| Schoenoplectus californicus | Scirpus californicus (C.A. Mey.) Steud. | SCCA |
| Schoenoplectus californicus | Scirpus californicus (C.A. Mey.) Steud. var. tereticulmis (Steud.) Beetle | SCCAT |
| Schoenoplectus deltarum | Scirpus deltarum Schuyler | SCDE2 |
| Schoenoplectus erectus ssp. raynalii | Scirpus erectus Poir. | SCER |
| Schoenoplectus erectus ssp. raynalii | Scirpus erismaniae Schuyler | SCER4 |
| Schoenoplectus erectus ssp. raynalii | Scirpus raynalii Schuyler | SCRA6 |
| Schoenoplectus erectus ssp. raynalii | Scirpus wilkensii Schuyler | SCWI3 |
| Schoenoplectus etuberculatus | Scirpus etuberculatus (Steud.) Kunze | SCET3 |
| Schoenoplectus fluviatilis | Bolboschoenus fluviatilis (Torr.) Soj | BOFL3 |
| Schoenoplectus fluviatilis | Bolboschoenus maritimus (L.) Palla ssp. fluviatilis (Torr.) A.& D. L?ve | BOMAF |
| Schoenoplectus fluviatilis | Scirpus fluviatilis (Torr.) Gray | SCFL |
| Schoenoplectus glaucus | Bolboschoenus glaucus (Lam.) S.G. Sm. | BOGL9 |
| Schoenoplectus glaucus | Scirpus glaucus Lam. | SCGL12 |
| Schoenoplectus glaucus | Scirpus maritimus L. var. tuberosus (auct. non Desf.) Roemer & J.A. Schultes | SCMAT |
| Schoenoplectus glaucus | Scirpus tuberosus auct. non Desf. [misapplied] | SCTU4 |
| Schoenoplectus hallii | Scirpus hallii Gray | SCHA |
| Schoenoplectus hallii | Scirpus supinus auct. non L. [misapplied] | SCSU4 |
| Schoenoplectus hallii | Scirpus supinus L. var. hallii (Gray) Gray | SCSUH |
| Schoenoplectus hallii | Scirpus uninodis (Delile) Boiss. var. hallii (Gray) Beetle | SCUNH |
| Schoenoplectus heterochaetus | Scirpus heterochaetus Chase | SCHE |
| Schoenoplectus heterochaetus | Scirpus lacustris auct. non L. [misapplied] | SCLA8 |
| Schoenoplectus heterochaetus | Scirpus lacustris L. var. tenuiculmis Sheldon | SCLAT |
| Schoenoplectus heterochaetus | Scirpus tenuiculmis (Sheldon) Soj | SCTE9 |
| Schoenoplectus juncoides | Scirpus juncoides Roxb. | SCJU |
| Schoenoplectus juncoides | Scirpus rockii K?kenth. | SCRO7 |
| Schoenoplectus maritimus | Bolboschoenus maritimus (L.) Palla | BOMA7 |
| Schoenoplectus maritimus | Bolboschoenus maritimus (L.) Palla ssp. paludosus (A. Nels.) A.& D. L?ve | BOMAP |
| Schoenoplectus maritimus | Bolboschoenus maritimus (L.) Palla var. paludosus (A. Nels.) Dorn | BOMAP2 |
| Schoenoplectus maritimus | Bolboschoenus paludosus (A. Nels.) So? | BOPA7 |
| Schoenoplectus maritimus | Scirpus fernaldii Bickn. | SCFE4 |
| Schoenoplectus maritimus | Scirpus maritimus L. | SCMA |
| Schoenoplectus maritimus | Scirpus maritimus L. var. fernaldii (Bickn.) Beetle | SCMAF |
| Schoenoplectus maritimus | Scirpus maritimus L. var. paludosus (A. Nels.) K?kenth. | SCMAP |
| Schoenoplectus maritimus | Scirpus pacificus Britt. | SCPA14 |
| Schoenoplectus maritimus | Scirpus paludosus A. Nels. | SCPA4 |
| Schoenoplectus maritimus | Scirpus paludosus A. Nels. var. atlanticus Fern. | SCPAA4 |
| Schoenoplectus mucronatus | Scirpus mucronatus L. | SCMU |
| Schoenoplectus novae-angliae | Bolboschoenus novae-angliae (Britt.) S.G. Sm. | BONO |
| Schoenoplectus novae-angliae | Scirpus cylindricus (Torr.) Britt. | SCCY2 |
| Schoenoplectus novae-angliae | Scirpus novae-angliae Britt. | SCNO3 |
| Schoenoplectus novae-angliae | Scirpus robustus Pursh var. novae-angliae (Britt.) Beetle | SCRON |
| Schoenoplectus novae-angliae | Scirpus subterminalis Torr. var. cylindricus (Torr.) T. Koyama | SCSUC |
| Schoenoplectus pungens var. badius | Scirpus americanus Pers. var. monophyllus (J.& K. Presl) T. Koyama | SCAMM |
| Schoenoplectus pungens var. badius | Scirpus monophyllus J.& K. Presl | SCMO8 |
| Schoenoplectus pungens var. badius | Scirpus pungens Vahl ssp. monophyllus (J.& K. Presl) Taylor & MacBryde | SCPUM |
| Schoenoplectus pungens var. longispicatus | Scirpus americanus Pers. var. longispicatus Britt. | SCAML |
| Schoenoplectus pungens var. longispicatus | Scirpus pungens Vahl var. longispicatus (Britt.) Taylor & MacBryde | SCPUL3 |
| Schoenoplectus pungens var. pungens | Bolboschoenus maritimus (L.) Palla var. polyphyllus (Boeckl.) Dorn | BOMAP3 |
| Schoenoplectus pungens var. pungens | Scirpus americanus auct. non Pers. [misapplied] | SCAM7 |
| Schoenoplectus pungens var. pungens | Scirpus americanus Pers. var. polyphyllus (Boeckl.) Beetle | SCAMP |
| Schoenoplectus pungens var. pungens | Scirpus pungens Vahl | SCPU3 |
| Schoenoplectus pungens var. pungens | Scirpus pungens Vahl var. polyphyllus Boeckl. | SCPUP3 |
| Schoenoplectus purshianus | Schoenoplectus juncoides (Roxb.) Palla ssp. purshianus (Fern.) Soj | SCJUP |
| Schoenoplectus purshianus | Scirpus debilis Pursh, non Lam. | SCDE4 |
| Schoenoplectus purshianus | Scirpus hotarui auct. non Ohwi [misapplied] | SCHO7 |
| Schoenoplectus purshianus | Scirpus juncoides Roxb. var. digynus (Boeckl.) T. Koyama | SCJUD |
| Schoenoplectus purshianus | Scirpus juncoides Roxb. var. williamsii (Fern.) T. Koyama | SCJUW |
| Schoenoplectus purshianus | Scirpus purshianus Fern. | SCPU4 |
| Schoenoplectus purshianus | Scirpus smithii Gray var. williamsii (Fern.) T. Beetle | SCSMW |
| Schoenoplectus robustus | Bolboschoenus robustus (Pursh) Soj | BORO5 |
| Schoenoplectus robustus | Scirpus maritimus L. var. agonus (Fern.) Beetle | SCMAA |
| Schoenoplectus robustus | Scirpus maritimus L. var. macrostachyus Michx. | SCMAM |
| Schoenoplectus robustus | Scirpus robustus Pursh | SCRO |
| Schoenoplectus saximontanus | Scirpus bergsonii Schuyler | SCBE |
| Schoenoplectus saximontanus | Scirpus saximontanus Fern. | SCSA2 |
| Schoenoplectus saximontanus | Scirpus supinus L. var. saximontanus (Fern.) T. Koyama | SCSUS |
| Schoenoplectus smithii | Scirpus smithii Gray | SCSM |
| Schoenoplectus smithii | Scirpus smithii Gray var. levisetus Fassett | SCSML |
| Schoenoplectus smithii | Scirpus smithii Gray var. setosus Fern. | SCSMS |
| Schoenoplectus subterminalis | Scirpus subterminalis Torr. | SCSU |
| Schoenoplectus tabernaemontani | Schoenoplectus lacustris (L.) Palla ssp. creber (Fern.) A.& D. L?ve | SCLAC |
| Schoenoplectus tabernaemontani | Schoenoplectus lacustris (L.) Palla ssp. tabernaemontani (K. C. Gmel.) A.& D. L?ve | SCLAT4 |
| Schoenoplectus tabernaemontani | Schoenoplectus lacustris (L.) Palla ssp. validus (Vahl) T. Koyama | SCLAV |
| Schoenoplectus tabernaemontani | Schoenoplectus validus (Vahl) A.& D. L?ve | SCVA3 |
| Schoenoplectus tabernaemontani | Schoenoplectus validus (Vahl) A.& D. L?ve ssp. creber (Fern.) A.& D. L?ve | SCVAC2 |
| Schoenoplectus tabernaemontani | Schoenoplectus validus (Vahl) A.& D. L?ve ssp. luxurians (Miq.) Soj | SCVAL |
| Schoenoplectus tabernaemontani | Scirpus lacustris L. ssp. creber (Fern.) T. Koyama | SCLAC2 |
| Schoenoplectus tabernaemontani | Scirpus lacustris L. ssp. glaucus (Reichenb.) Hartman | SCLAG2 |
| Schoenoplectus tabernaemontani | Scirpus lacustris L. ssp. tabernaemontani (K.C. Gmel.) Syme | SCLAT2 |
| Schoenoplectus tabernaemontani | Scirpus lacustris L. ssp. validus (Vahl) T. Koyama | SCLAV2 |
| Schoenoplectus tabernaemontani | Scirpus tabernaemontani K.C. Gmel. | SCTA80 |
| Schoenoplectus tabernaemontani | Scirpus validus Vahl | SCVA |
| Schoenoplectus tabernaemontani | Scirpus validus Vahl var. creber Fern. | SCVAC |
| Schoenoplectus torreyi | Scirpus torreyi Olney | SCTO |
| Schoenoplectus triqueter | Hymenochaeta triqueter (L.) Nakai | HYTR3 |
| Schoenoplectus triqueter | Scirpus triqueter L. | SCTR3 |
| Schott's sedge | Carex schottii Dewey | CASC8 |
| Schweinitz's flatsedge | Cyperus schweinitzii Torr. | CYSC3 |
| Schweinitz's sedge | Carex schweinitzii Dewey ex Schwein. | CASC9 |
| Scirpoides holoschoenus | Holoschoenus romanus (L.) Fritsch | HORO5 |
| Scirpoides holoschoenus | Holoschoenus vulgaris Link | HOVU2 |
| Scirpoides holoschoenus | Scirpus holoschoenus L. | SCHO2 |
| Scirpus atrocinctus | Scirpus cyperinus (L.) Kunth var. brachypodus (Fern.) Gilly | SCCYB |
| Scirpus cyperinus | Scirpus cyperinus (L.) Kunth var. condensatus Fern. | SCCYC |
| Scirpus cyperinus | Scirpus cyperinus (L.) Kunth var. eriophorum (Michx.) Kunth | SCCYE8 |
| Scirpus cyperinus | Scirpus cyperinus (L.) Kunth var. laxus (Gray) Beetle | SCCYL |
| Scirpus cyperinus | Scirpus cyperinus (L.) Kunth var. pelius Fern. | SCCYP |
| Scirpus cyperinus | Scirpus cyperinus (L.) Kunth var. rubricosus (Fern.) Gilly | SCCYR |
| Scirpus cyperinus | Scirpus eriophorum Michx. | SCER3 |
| Scirpus cyperinus | Scirpus rubricosus Fern. | SCRU4 |
| Scirpus expansus | Scirpus sylvaticus L. p.p. | SCSY80 |
| Scirpus flaccidifolius | Scirpus atrovirens Willd. var. flaccidifolius Fern. | SCATF |
| Scirpus georgianus | Scirpus atrovirens Willd. var. georgianus (Harper) Fern. | SCATG |
| Scirpus lineatus | Scirpus fontinalis Harper | SCFO |
| Scirpus microcarpus | Scirpus microcarpus J.& K. Presl var. longispicatus M.E. Peck | SCMIL |
| Scirpus microcarpus | Scirpus microcarpus J.& K. Presl var. rubrotinctus (Fern.) M.E. Jones | SCMIR |
| Scirpus microcarpus | Scirpus rubrotinctus Fern. | SCRU5 |
| Scirpus nevadensis | Amphiscirpus nevadensis (S. Wats.) Oteng Yeboah | AMNE3 |
| Scirpus pallidus | Scirpus atrovirens Willd. var. pallidus Britt. | SCATP2 |
| Scirpus pedicellatus | Scirpus cyperinus (L.) Kunth var. pedicellatus (Fern.) Schuyler | SCCYP2 |
| Scirpus pedicellatus | Scirpus pedicellatus Fern. var. pullus Fern. | SCPEP |
| Scirpus pendulus | Scirpus lineatus auct. non Michx. [misapplied] | SCLI7 |
| Scleria baldwinii | Scleria costata (Britt.) Small | SCCO16 |
| Scleria ciliata var. ciliata | Scleria ciliata Michx. var. elliottii (Chapman) Fern. | SCCIE |
| Scleria ciliata var. ciliata | Scleria elliottii Chapman | SCEL4 |
| Scleria ciliata var. glabra | Scleria brittonii Core ex Small | SCBR8 |
| Scleria ciliata var. glabra | Scleria pauciflora Muhl. ex Willd. var. glabra Chapman | SCPAG |
| Scleria eggersiana | Scleria grisebachii C.B. Clarke | SCGR3 |
| Scleria georgiana | Scleria gracilis Ell., non L.C. Rich. | SCGR4 |
| Scleria hirtella | Scleria distans Poir. | SCDI3 |
| Scleria hirtella | Scleria doradoensis Britt. | SCDO |
| Scleria hirtella | Scleria interrupta L.C. Rich. | SCIN6 |
| Scleria hirtella | Scleria nutans Willd. ex Kunth | SCNU2 |
| Scleria lithosperma | Scirpus lithospermus L. | SCLI8 |
| Scleria muehlenbergii | Scleria reticularis Michx. var. pubescens Britt. | SCREP |
| Scleria muehlenbergii | Scleria setacea auct. non Poir. [misapplied] | SCSE2 |
| Scleria muehlenbergii | Scleria stevensiana Britt. | SCST5 |
| Scleria pauciflora var. curtissii | Scleria ciliata Michx. var. curtissii (Britt.) Kessler | SCCIC2 |
| Scleria pauciflora var. curtissii | Scleria curtissii Britt. | SCCU3 |
| Scleria pauciflora var. pauciflora | Scleria pauciflora Muhl. ex Willd. var. kansana Fern. | SCPAK |
| Scleria pterota var. melaleuca | Scleria melaleuca Reichenb. ex Schlecht. & Cham. | SCME |
| Scleria reticularis | Scleria reticularis Michx. var. pumila Britt. | SCREP2 |
| Scleria scindens | Scleria canescens Boeckl. | SCCA5 |
| Scleria triglomerata | Scleria flaccida Steud. | SCFL3 |
| Scleria triglomerata | Scleria nitida Muhl. ex Willd. | SCNI3 |
| Scleria verticillata | Scleria tenella Kunth | SCTE8 |
| scrabrous black sedge | Carex atratiformis Britt. | CAAT6 |
| sea sedge | Carex marina Dewey | CAMA34 |
| sea sedge | Carex marina Dewey ssp. marina | CAMAM16 |
| sedge | Abildgaardia Vahl | ABILD |
| sedge | Carex L. | CAREX |
| sedge | Carex sonomensis Stacey | CASO10 |
| separated sedge | Carex divisa Huds. | CADI8 |
| serpentine sedge | Carex serpenticola P. Zika | CASE33 |
| shallow sedge | Carex lurida Wahlenb. | CALU5 |
| sharpscale bulrush | Schoenoplectus erectus (Poir.) Palla ex Raynal | SCER5 |
| sharpscale bulrush | Schoenoplectus erectus (Poir.) Palla ex Raynal ssp. raynalii (Schuyler) Lye | SCERR |
| sharpscale flatsedge | Cyperus oxylepis Nees ex Steud. | CYOX |
| sharpscale sedge | Carex oxylepis Torr. & Hook. | CAOX |
| sharpscale sedge | Carex oxylepis Torr. & Hook. var. oxylepis | CAOXO |
| sharpscale sedge | Carex oxylepis Torr. & Hook. var. pubescens J.K. Underwood | CAOXP |
| sharpscale spikerush | Eleocharis compressa Sullivant var. acutisquamata (Buckl.) S.G. Sm. | ELCOA3 |
| Shasta sedge | Carex straminiformis Bailey | CAST7 |
| shaved sedge | Carex tonsa (Fern.) Bickn. | CATO10 |
| shaved sedge | Carex tonsa (Fern.) Bickn. var. tonsa | CATOT |
| sheathed sedge | Carex vaginata Tausch | CAVA2 |
| sheep sedge | Carex illota Bailey | CAIL |
| Sheldon's sedge | Carex sheldonii Mackenzie | CASH |
| shingle flatsedge | Cyperus imbricatus Retz. | CYIM |
| Shinner's sedge | Carex shinnersii P. Rothr. & Reznicek | CASH8 |
| shoreline sedge | Carex hyalinolepis Steud. | CAHY3 |
| Short's sedge | Carex shortiana Dewey | CASH2 |
| shortbeak beaksedge | Rhynchospora nitens (Vahl) Gray | RHNI |
| shortbeak sedge | Carex brevior (Dewey) Mackenzie | CABR10 |
| shortbristle beaksedge | Rhynchospora breviseta (Gale) Channell | RHBR2 |
| shortbristle horned beaksedge | Rhynchospora corniculata (Lam.) Gray | RHCO2 |
| shortfruit spikerush | Eleocharis brachycarpa Svens. | ELBR4 |
| shorthair sedge | Carex exserta Mackenzie | CAEX4 |
| shortleaf spikesedge | Kyllinga brevifolia Rottb. | KYBR |
| shortleaved sedge | Carex misandra R. Br. | CAMI10 |
| shortstalk sedge | Carex podocarpa R. Br. | CAPO |
| shortstem sedge | Carex brevicaulis Mackenzie | CABR8 |
| showy sedge | Carex spectabilis Dewey | CASP5 |
| showy whitetop | Rhynchospora nivea Boeckl. | RHNI2 |
| Siberian bog sedge | Kobresia sibirica (Turcz. ex Ledeb.) Boeckl. | KOSI |
| Sierra hare sedge | Carex leporinella Mackenzie | CALE9 |
| Sierra sedge | Carex nervina Bailey | CANE5 |
| Sierra slender sedge | Carex teneriformis Mackenzie | CATE4 |
| silvery sedge | Carex canescens L. | CACA11 |
| silvery sedge | Carex canescens L. ssp. canescens | CACAC6 |
| silvery sedge | Carex canescens L. ssp. disjuncta (Fern.) Toivonen | CACAD2 |
| simple bog sedge | Kobresia simpliciuscula (Wahlenb.) Mackenzie | KOSI2 |
| Sintenis's spikerush | Eleocharis sintenisii Boeckl. | ELSI10 |
| Siskiyou sedge | Carex scabriuscula Mackenzie | CASC14 |
| Sitka sedge | Carex aquatilis Wahlenb. var. dives (Holm) K?kenth. | CAAQD |
| slender beaksedge | Rhynchospora gracilenta Gray | RHGR |
| slender bulrush | Schoenoplectus heterochaetus (Chase) Soj | SCHE5 |
| slender cottongrass | Eriophorum gracile W.D.J. Koch | ERGR8 |
| slender cottongrass | Eriophorum gracile W.D.J. Koch var. caurianum Fern. | ERGRC2 |
| slender cottongrass | Eriophorum gracile W.D.J. Koch var. gracile | ERGRG2 |
| slender fimbry | Fimbristylis autumnalis (L.) Roemer & J.A. Schultes | FIAU2 |
| slender flatsedge | Cyperus bipartitus Torr. | CYBI6 |
| slender looseflower sedge | Carex gracilescens Steud. | CAGR8 |
| slender nutrush | Scleria minor W. Stone | SCMI4 |
| slender sedge | Carex gracilior Mackenzie | CAGR9 |
| slender spikerush | Eleocharis tenuis (Willd.) J.A. Schultes | ELTE |
| slender spikerush | Eleocharis tenuis (Willd.) J.A. Schultes var. pseudoptera (Weatherby ex Svens.) Svens. | ELTEP |
| slender spikerush | Eleocharis tenuis (Willd.) J.A. Schultes var. tenuis | ELTET |
| slender spikerush | Eleocharis tenuis (Willd.) J.A. Schultes var. verrucosa (Svens.) Svens. | ELTEV |
| slender woodland sedge | Carex digitalis Willd. | CADI5 |
| slender woodland sedge | Carex digitalis Willd. var. digitalis | CADID2 |
| slender-fruit beaksedge | Rhynchospora leptocarpa (Chapman ex Britt.) Small | RHLE2 |
| slenderbeak sedge | Carex athrostachya Olney | CAAT3 |
| slenderfruit nutrush | Scleria georgiana Core | SCGE |
| slim spikerush | Eleocharis elongata Chapman | ELEL2 |
| slimjim flatsedge | Cyperus gracilis R. Br. | CYGR9 |
| slough sedge | Carex obnupta Bailey | CAOB3 |
| small spikerush | Eleocharis minima Kunth | ELMI3 |
| smallawned sedge | Carex microchaeta Holm | CAMI4 |
| smallawned sedge | Carex microchaeta Holm ssp. microchaeta | CAMIM |
| smallbract sedge | Carex subbracteata Mackenzie | CASU4 |
| smallflower halfchaff sedge | Lipocarpha micrantha (Vahl) G. Tucker | LIMI12 |
| smallfruit spikerush | Eleocharis microcarpa Torr. | ELMI2 |
| smallhead beaksedge | Rhynchospora microcephala (Britt.) Britt. | RHMI8 |
| smallwing sedge | Carex microptera Mackenzie | CAMI7 |
| Smith's bulrush | Schoenoplectus smithii (Gray) Soj | SCSM2 |
| smooth black sedge | Carex nigra (L.) Reichard | CANI5 |
| smooth bogrush | Schoenus apogon Roemer & J.A. Schultes | SCAP3 |
| smooth flatsedge | Cyperus laevigatus L. | CYLA2 |
| smooth sawgrass | Cladium mariscoides (Muhl.) Torr. | CLMA |
| smoothbeak sedge | Carex integra Mackenzie | CAIN10 |
| smoothcone sedge | Carex laeviconica Dewey | CALA12 |
| smoothsheath sedge | Carex laevivaginata (K?kenth.) Mackenzie | CALA14 |
| smoothstem sedge | Carex laeviculmis Meinsh. | CALA13 |
| soft fox sedge | Carex conjuncta Boott | CACO13 |
| soft-stem spikerush | Eleocharis mamillata (Lindb. f.) Lindb. f. | ELMA15 |
| softleaf sedge | Carex disperma Dewey | CADI6 |
| softstem bulrush | Schoenoplectus tabernaemontani (K.C. Gmel.) Palla | SCTA2 |
| soldier beaksedge | Rhynchospora tenerrima Nees ex Spreng. | RHTE3 |
| southern beaksedge | Rhynchospora microcarpa Baldw. ex Gray | RHMI7 |
| southern fimbry | Fimbristylis decipiens Kral | FIDE3 |
| southern flatsedge | Cyperus thyrsiflorus Jungh. | CYTH |
| southern long sedge | Carex lonchocarpa Willd. | CALO9 |
| southern sedge | Carex austrina Mackenzie | CAAU6 |
| southern umbrella-sedge | Fuirena scirpoidea Michx. | FUSC |
| southern waxy sedge | Carex glaucescens Ell. | CAGL5 |
| southwestern showy sedge | Carex bella Bailey | CABE3 |
| sparseflower sedge | Carex tenuiflora Wahlenb. | CATE5 |
| spectacular flatsedge | Cyperus manimae Kunth | CYMA4 |
| spectacular flatsedge | Cyperus manimae Kunth var. asperrimus (Liebm.) K?kenth. | CYMAA |
| spectacular flatsedge | Cyperus spectabilis Link | CYSP2 |
| spike sedge | Carex nardina Fries | CANA2 |
| spike sedge | Carex nardina Fries var. nardina Fries [excluded] | CANAN3 |
| spiked beaksedge | Rhynchospora chinensis Nees & Meyen | RHCH6 |
| spiked beaksedge | Rhynchospora chinensis Nees & Meyen ssp. chinensis | RHCHC2 |
| spiked beaksedge | Rhynchospora chinensis Nees & Meyen ssp. spiciformis (Hbd.) T. Koyama | RHCHS |
| spikerush | Eleocharis congesta D. Don | ELCO11 |
| spikerush | Eleocharis ochrostachys Steud. | ELOC2 |
| spikerush | Eleocharis R. Br. | ELEOC |
| spikesedge | Kyllinga Rottb. | KYLLI2 |
| splitawn sedge | Carex tumulicola Mackenzie | CATU3 |
| spreading beaksedge | Rhynchospora divergens Chapman ex M.A. Curtis | RHDI3 |
| spreading bulrush | Scirpus divaricatus Ell. | SCDI2 |
| spreading sedge | Carex laxiculmis Schwein. | CALA18 |
| spreading sedge | Carex laxiculmis Schwein. var. copulata (Bailey) Fern. | CALAC |
| spreading sedge | Carex laxiculmis Schwein. var. laxiculmis | CALAL4 |
| Sprengel's sedge | Carex sprengelii Dewey ex Spreng. | CASP7 |
| spruce muskeg sedge | Carex lugens Holm | CALU2 |
| squarestem spikerush | Eleocharis quadrangulata (Michx.) Roemer & J.A. Schultes | ELQU |
| squarrose sedge | Carex squarrosa L. | CASQ2 |
| stalked bulrush | Scirpus pedicellatus Fern. | SCPE3 |
| stalkgrain sedge | Carex stipata Muhl. ex Willd. var. maxima Chapman | CASTM |
| star sedge | Carex echinata Murr. | CAEC |
| star sedge | Carex echinata Murr. ssp. echinata | CAECE |
| star sedge | Carex echinata Murr. ssp. phyllomanica (W. Boott) Reznicek | CAECP |
| starrush whitetop | Rhynchospora colorata (L.) H. Pfeiffer | RHCO7 |
| stellate sedge | Carex albicans Willd. ex Spreng. var. australis (Bailey) J. Rettig | CAALA2 |
| Steven's sedge | Carex norvegica Retz. ssp. stevenii (Holm) E. Murr. | CANOS |
| sticky flatsedge | Cyperus trachysanthos Hook. & Arn. | CYTR2 |
| stiff sedge | Carex biltmoreana Mackenzie | CABI9 |
| Stone Mountain beaksedge | Rhynchospora globularis (Chapman) Small var. saxicola (Small) K?kenth. | RHGLS |
| storm sedge | Carex onusta Mackenzie | CAON2 |
| strawcolored flatsedge | Cyperus strigosus L. | CYST |
| streambank bulrush | Schoenoplectus triqueter (L.) Palla | SCTR5 |
| sturdy bulrush | Schoenoplectus robustus (Pursh) M.T. Strong | SCRO5 |
| sturdy sedge | Carex alma Bailey | CAAL7 |
| Suksdorf's spikerush | Eleocharis suksdorfiana Beauv. | ELSU2 |
| sulphur sedge | Carex lutea LeBlond | CALU26 |
| summer fimbry | Fimbristylis aestivalis (Retz.) Vahl | FIAE |
| summer sedge | Carex aestivalis M.A. Curtis ex Gray | CAAE2 |
| sun sedge | Carex inops Bailey ssp. heliophila (Mackenzie) Crins | CAINH2 |
| swamp carex | Carex senta Boott | CASE |
| swamp flatsedge | Cyperus distinctus Steud. | CYDI8 |
| swamp sawgrass | Cladium mariscus (L.) Pohl | CLMA10 |
| swampforest beaksedge | Rhynchospora decurrens Chapman | RHDE |
| Swan's sedge | Carex swanii (Fern.) Mackenzie | CASW |
| Swartz's flatsedge | Cyperus swartzii (A. Dietr.) Boeckl. ex K?kenth. | CYSW |
| swaying bulrush | Schoenoplectus subterminalis (Torr.) Soj | SCSU10 |
| Tahoe sedge | Carex tahoensis Smiley | CATA |
| tall cottongrass | Eriophorum angustifolium Honckeny | ERAN6 |
| tall cottongrass | Eriophorum angustifolium Honckeny ssp. angustifolium Honckeny [excluded] | ERANA3 |
| tall cottongrass | Eriophorum angustifolium Honckeny ssp. scabriusculum Hult | ERANS |
| tall cottongrass | Eriophorum angustifolium Honckeny ssp. subarcticum (Vassiljev) Hult?n ex Kartesz & Gandhi | ERANS2 |
| tall cottongrass | Eriophorum angustifolium Honckeny ssp. triste (T. Fries) Hult | ERANT |
| tall flatsedge | Cyperus eragrostis Lam. | CYER |
| tall horned beaksedge | Rhynchospora macrostachya Torr. ex Gray | RHMA6 |
| taperfruit shortscale sedge | Carex leptopoda Mackenzie | CALE24 |
| tapertip flatsedge | Cyperus acuminatus Torr. & Hook. ex Torr. | CYAC2 |
| tarheel sedge | Carex austrocaroliniana Bailey | CAAU7 |
| Tarheel sedge | Carex pigra Naczi | CAPI21 |
| tawny cottongrass | Eriophorum virginicum L. | ERVI8 |
| Texan flatsedge | Cyperus polystachyos Rottb. var. texensis (Torr.) Fern. | CYPOT |
| Texas flatsedge | Cyperus seslerioides Kunth | CYSE2 |
| Texas sedge | Carex texensis (Torr.) Bailey | CATE7 |
| thicket sedge | Carex abscondita Mackenzie | CAAB5 |
| thickhead sedge | Carex macloviana d'Urv. | CAMA9 |
| thinfruit sedge | Carex flaccosperma Dewey | CAFL3 |
| thinleaf cottonsedge | Eriophorum viridicarinatum (Engelm.) Fern. | ERVI9 |
| thinleaf sedge | Carex cephaloidea (Dewey) Dewey | CACE2 |
| Thompkins's sedge | Carex tompkinsii J.T. Howell | CATO9 |
| Thorne's beaksedge | Rhynchospora thornei Kral | RHTH |
| threadleaf beaksedge | Rhynchospora filifolia Gray | RHFI |
| threadleaf sedge | Carex filifolia Nutt. | CAFI |
| three-angle spikerush | Eleocharis tricostata Torr. | ELTR5 |
| threeseeded sedge | Carex trisperma Dewey | CATR10 |
| threeseeded sedge | Carex trisperma Dewey var. trisperma | CATRT3 |
| threeway sedge | Dulichium arundinaceum (L.) Britt. | DUAR3 |
| Thurber's sedge | Carex thurberi Dewey | CATH |
| tidal spikerush | Eleocharis aestuum D.M. Hines ex A. Haines | ELAE2 |
| tidalmarsh flatsedge | Cyperus serotinus Rottb. | CYSE5 |
| tinged sedge | Carex tincta (Fern.) Fern. | CATI2 |
| Tioga Pass sedge | Carex tiogana D. Taylor & J. Mastrogiuseppe, sp. nov. ined. | CATI5 |
| tissue sedge | Carex hyalina Boott | CAHY2 |
| toothed flatsedge | Cyperus dentatus Torr. | CYDE2 |
| Torrey's beaksedge | Rhynchospora torreyana Gray | RHTO4 |
| Torrey's bulrush | Schoenoplectus torreyi (Olney) Palla | SCTO3 |
| Torrey's sedge | Carex torreyi Tuckerman | CATO3 |
| Tracy's beaksedge | Rhynchospora tracyi Britt. | RHTR2 |
| triangularfruit sedge | Carex triquetra Boott | CATR9 |
| Trichophorum alpinum | Baeothryon alpinum (L.) Egor. | BAAL6 |
| Trichophorum alpinum | Eriophorum alpinum L. | ERAL10 |
| Trichophorum alpinum | Leucocoma alpina (L.) Rydb. | LEAL7 |
| Trichophorum alpinum | Scirpus hudsonianus (Michx.) Fern. | SCHU2 |
| Trichophorum caespitosum | Baeothryon caespitosum (L.) A. Dietr. | BACA20 |
| Trichophorum caespitosum | Baeothryon cespitosum (L.) A. Dietr. [orthographic variant] | BACE |
| Trichophorum caespitosum | Scirpus caespitosus L. | SCCA27 |
| Trichophorum caespitosum | Scirpus caespitosus L. var. austriacus (Pallas) Aschers. & Graebn. | SCCAA |
| Trichophorum caespitosum | Scirpus caespitosus L. var. callosus Bigelow | SCCAC3 |
| Trichophorum caespitosum | Scirpus caespitosus L. var. delicatulus Fern. | SCCAD2 |
| Trichophorum caespitosum | Scirpus cespitosus L. var. austriacus (Pallas) Aschers. & Graebn. [orthographic variant] | SCCEA |
| Trichophorum caespitosum | Scirpus cespitosus L. var. callosus Bigelow [orthographic variant] | SCCEC3 |
| Trichophorum caespitosum | Scirpus cespitosus L. var. delicatulus Fern. [orthographic variant] | SCCED |
| Trichophorum caespitosum | Scirpus cespitosus L. [orthographic variant] | SCCE2 |
| Trichophorum caespitosum | Trichophorum caespitosum (L.) Hartman var. callosum (Bigelow) Mohlenbrock | TRCAC6 |
| Trichophorum caespitosum | Trichophorum cespitosum (L.) Hartman [orthographic variant] | TRCE3 |
| Trichophorum clementis | Baeothryon clementis (M.E. Jones) A.& D. L?ve | BACL3 |
| Trichophorum clementis | Scirpus clementis M.E. Jones | SCCL |
| Trichophorum clintonii | Baeothryon clintonii (Gray) A.& D. L?ve | BACL4 |
| Trichophorum clintonii | Scirpus clintonii Gray | SCCL2 |
| Trichophorum planifolium | Baeothryon verecundum (Fern.) A.& D. L?ve | BAVE8 |
| Trichophorum planifolium | Scirpus planifolius Muhl., non Grimm | SCPL2 |
| Trichophorum planifolium | Scirpus verecundus Fern. | SCVE |
| Trichophorum planifolium | Trichophorum verecundum (Fern.) Mohlenbrock | TRVE9 |
| Trichophorum pumilum | Baeothryon pumilum (Vahl) A.& D. L?ve | BAPU4 |
| Trichophorum pumilum | Scirpus pumilus Vahl | SCPU11 |
| Trichophorum pumilum | Scirpus pumilus Vahl ssp. rollandii (Fern.) Raymond | SCPUR |
| Trichophorum pumilum | Scirpus pumilus Vahl var. rollandii (Fern.) Beetle | SCPUR2 |
| Trichophorum pumilum | Scirpus rollandii Fern. | SCRO3 |
| Trichophorum pumilum | Trichophorum pumilum (Vahl) Schinz & Thellung ssp. rollandii (Fern.) Taylor & MacBryde | TRPUR3 |
| Trichophorum pumilum | Trichophorum pumilum (Vahl) Schinz & Thellung var. rollandii (Fern.) Hult | TRPUR2 |
| Trichophorum pumilum | Trichophorum rollandii (Fern.) Hult | TRRO6 |
| tropical beaksedge | Rhynchospora micrantha Vahl | RHMI6 |
| tropical fimbry | Fimbristylis cymosa R. Br. | FICY |
| tropical fimbry | Fimbristylis cymosa R. Br. ssp. cymosa | FICYC |
| tropical fimbry | Fimbristylis cymosa R. Br. ssp. umbellatacapitata (Hbd.) T. Koyama | FICYU |
| tropical flatsedge | Cyperus surinamensis Rottb. | CYSU |
| tropical nutrush | Scleria microcarpa Nees ex Kunth | SCMI3 |
| tropical twigrush | Machaerina mariscoides (Gaud.) J. Kern | MAMA12 |
| tropical twigrush | Machaerina mariscoides (Gaud.) J. Kern ssp. mariscoides (Gaud.) J. Kern [excluded] | MAMAM7 |
| tropical whitetop | Rhynchospora radicans (Schlecht. & Cham.) H. Pfeifer | RHRA4 |
| tropical whitetop | Rhynchospora radicans (Schlecht. & Cham.) H. Pfeifer ssp. microcephala (Bertero ex Spreng.) Thomas | RHRAM |
| troublesome sedge | Carex molesta Mackenzie ex Bright | CAMO11 |
| tuberous bulrush | Schoenoplectus glaucus (Lam.) Kartesz | SCGL11 |
| Tuckerman's sedge | Carex tuckermanii Dewey | CATU2 |
| tufted bulrush | Trichophorum caespitosum (L.) Hartman | TRCA30 |
| tufted hairsedge | Bulbostylis vestita (Kunth) C.B. Clarke | BUVE |
| tule | Schoenoplectus acutus (Muhl. ex Bigelow) A.& D. L?ve var. occidentalis (S. Wats.) S.G. Sm. | SCACO2 |
| turban sedge | Carex turbinata Lieb. | CATU17 |
| tussock cottongrass | Eriophorum vaginatum L. | ERVA4 |
| tussock cottongrass | Eriophorum vaginatum L. var. spissum (Fern.) Boivin | ERVAS |
| tussock cottongrass | Eriophorum vaginatum L. var. vaginatum | ERVAV |
| twigrush | Machaerina falcata (Nees) Koyama | MAFA9 |
| twigrush | Machaerina Vahl | MACHA2 |
| twist-stem spikerush | Eleocharis torticulmis S.G. Sm. | ELTO5 |
| twisted sedge | Carex torta Boott ex Tuckerman | CATO4 |
| twisted spikerush | Eleocharis tortilis (Link) J.A. Schultes | ELTO |
| two-tone spikerush | Eleocharis bicolor Chapman | ELBI3 |
| twocolor sedge | Carex bicolor Bellardi ex All. | CABI4 |
| twotipped sedge | Carex lachenalii Schkuhr | CALA10 |
| twotooth sedge | Carex serratodens W. Boott | CASE2 |
| umbrella bulrush | Scirpus diffusus Schuyler | SCDI |
| umbrella flatsedge | Cyperus diandrus Torr. | CYDI3 |
| umbrella-sedge | Fuirena Rottb. | FUIRE |
| unbrella plant | Cyperus involucratus Rottb. | CYIN6 |
| Uncinia uncinata | Uncinia uncinata (L. f.) K?kenth. var. uliginosa Skottsberg | UNUNU2 |
| uniola flatsedge | Cyperus unioloides R. Br. | CYUN3 |
| upright sedge | Carex stricta Lam. | CAST8 |
| Urban's flatsedge | Cyperus urbanii Boeckl. | CYUR |
| Vahl's fimbry | Fimbristylis vahlii (Lam.) Link | FIVA |
| Vahl's flatsedge | Cyperus flexuosus Vahl | CYFL3 |
| valley sedge | Carex vallicola Dewey | CAVA3 |
| valley sedge | Carex vallicola Dewey var. vallicola | CAVAV |
| variable flatsedge | Cyperus difformis L. | CYDI4 |
| variable sedge | Carex polymorpha Muhl. | CAPO4 |
| variegated sedge | Carex stylosa C.A. Mey. | CAST10 |
| velvet sedge | Carex vestita Willd. | CAVE9 |
| vernal sedge | Carex caryophyllea Lat. | CACA23 |
| viviparous spikerush | Eleocharis vivipara Link | ELVI4 |
| Walter's sedge | Carex striata Michx. | CAST41 |
| Walter's sedge | Carex striata Michx. var. brevis Bailey | CASTB |
| Walter's sedge | Carex striata Michx. var. striata | CASTS4 |
| Ware's hairsedge | Bulbostylis warei (Torr.) C.B. Clarke | BUWA |
| warty sedge | Carex verrucosa Muhl. | CAVE8 |
| water sedge | Carex aquatilis Wahlenb. | CAAQ |
| water sedge | Carex aquatilis Wahlenb. var. aquatilis | CAAQA |
| water sedge | Carex aquatilis Wahlenb. var. stans (Drej.) Boott | CAAQS |
| Waterfall's sedge | Carex latebracteata Waterfall | CALA31 |
| watergrass | Bulbostylis barbata (Rottb.) C.B. Clarke | BUBA |
| weak arctic sedge | Carex supina Willd. ex Wahlenb. | CASU9 |
| weak arctic sedge | Carex supina Willd. ex Wahlenb. var. spaniocarpa (Steud.) Boivin | CASUS3 |
| weak sedge | Carex laxa Wahlenb. | CALA17 |
| weak stellate sedge | Carex seorsa Howe | CASE6 |
| weakstalk bulrush | Schoenoplectus purshianus (Fern.) M.T. Strong | SCPU13 |
| Websteria confervoides | Eleocharis confervoides (Poir.) G. Tucker | ELCO10 |
| Websteria confervoides | Scirpus confervoides Poir. | SCCO15 |
| Websteria confervoides | Websteria submersa (Sauvalle) Britt. | WESU |
| West Indian beaksedge | Rhynchospora brachychaeta C. Wright | RHBR |
| West Indian fimbry | Fimbristylis ferruginea (L.) Vahl | FIFE |
| West Indian flatsedge | Cyperus confertus Sw. | CYCO2 |
| West Indian hairsedge | Bulbostylis curassavica (Britt.) Britt. ex K?kenth. | BUCU |
| western fox sedge | Carex vicaria Bailey | CAVI3 |
| western halfchaff sedge | Lipocarpha occidentalis (Gray) G. Tucker | LIOC3 |
| western inflated sedge | Carex exsiccata Bailey | CAEX5 |
| western sedge | Carex occidentalis Bailey | CAOC2 |
| western singlespike sedge | Carex scirpoidea Michx. ssp. pseudoscirpoidea (Rydb.) Dunlop | CASCP3 |
| western umbrella-sedge | Fuirena simplex Vahl | FUSI |
| western umbrella-sedge | Fuirena simplex Vahl var. aristulata (Torr.) Kral | FUSIA |
| western umbrella-sedge | Fuirena simplex Vahl var. simplex | FUSIS |
| wheat sedge | Carex atherodes Spreng. | CAAT2 |
| whip nutrush | Scleria triglomerata Michx. | SCTR |
| white beaksedge | Rhynchospora alba (L.) Vahl | RHAL3 |
| white bear sedge | Carex albursina Sheldon | CAAL11 |
| white cottongrass | Eriophorum scheuchzeri Hoppe | ERSC2 |
| white edge sedge | Carex debilis Michx. | CADE5 |
| white edge sedge | Carex debilis Michx. var. debilis | CADED |
| white edge sedge | Carex debilis Michx. var. intercursa Fern. | CADEI |
| white edge sedge | Carex debilis Michx. var. interjecta Bailey | CADEI2 |
| white edge sedge | Carex debilis Michx. var. pubera Gray | CADEP |
| white edge sedge | Carex debilis Michx. var. rudgei Bailey | CADER |
| white edge sedge | Carex debilis Michx. var. strictior Bailey | CADES |
| White Mountain sedge | Carex geophila Mackenzie | CAGE |
| white sedge | Carex albida Bailey | CAAL4 |
| white spikerush | Eleocharis albida Torr. | ELAL |
| whitebristle cottongrass | Eriophorum altaicum Meinsh. | ERAL7 |
| whitebristle cottongrass | Eriophorum altaicum Meinsh. var. altaicum Meinsh. [excluded] | ERALA4 |
| whitebristle cottongrass | Eriophorum altaicum Meinsh. var. neogaeum Raymond | ERALN |
| whiteedge flatsedge | Cyperus flavicomus Michx. | CYFL5 |
| whitehead spikesedge | Kyllinga nemoralis (J.R. & G. Forst.) Dandy ex Hutchinson & Dalziel | KYNE |
| whitescale sedge | Carex xerantica Bailey | CAXE |
| whitetinge sedge | Carex albicans Willd. ex Spreng. | CAAL25 |
| whitetinge sedge | Carex albicans Willd. ex Spreng. var. albicans | CAALA |
| Whitney's sedge | Carex whitneyi Olney | CAWH |
| widefruit sedge | Carex angustata Boott | CAAN15 |
| widow's sedge | Carex distenta Kunze | CADI17 |
| Wiegand's sedge | Carex wiegandii Mackenzie | CAWI7 |
| Willdenow's sedge | Carex basiantha Steud. | CABA24 |
| Willdenow's sedge | Carex superata Naczi, Reznicek, and B.A. Ford | CASU67 |
| Willdenow's sedge | Carex willdenowii Schkuhr ex Willd. | CAWI2 |
| Williams's sedge | Carex williamsii Britt. | CAWI3 |
| wire sedge | Carex tenax Chapman | CATE12 |
| wiry flatsedge | Cyperus filiformis Sw. | CYFI4 |
| withering flatsedge | Cyperus fugax Liebm. | CYFU9 |
| Wolf's spikerush | Eleocharis wolfii (Gray) Gray ex Britt. | ELWO |
| woodland bulrush | Scirpus expansus Fern. | SCEX |
| woodrush flatsedge | Cyperus entrerianus Boeckl. | CYEN2 |
| woodrush sedge | Carex luzulina Olney | CALU7 |
| woodrush sedge | Carex luzulina Olney var. ablata (Bailey) F.J. Herm. | CALUA |
| woodrush sedge | Carex luzulina Olney var. atropurpurea Dorn | CALUA3 |
| woodrush sedge | Carex luzulina Olney var. luzulina | CALUL2 |
| woolgrass | Scirpus cyperinus (L.) Kunth | SCCY |
| woolly fimbry | Fimbristylis tomentosa Vahl | FITO |
| woolly sedge | Carex pellita Muhl. ex Willd. | CAPE42 |
| woollyfruit sedge | Carex lasiocarpa Ehrh. | CALA11 |
| Wooton's sedge | Carex wootonii Mackenzie | CAWO |
| wretched sedge | Carex misera Buckl. | CAMI17 |
| Wright's beaksedge | Rhynchospora wrightiana Boeckl. | RHWR |
| Wright's flatsedge | Cyperus dipsaceus Liebamann | CYDI15 |
| Wright's spikerush | Eleocharis diandra C. Wright | ELDI2 |
| yefen | Fuirena umbellata Rottb. | FUUM |
| yellow flatsedge | Cyperus flavescens L. | CYFL |
| yellow nutsedge | Cyperus esculentus L. | CYES |
| yellow nutsedge | Cyperus esculentus L. var. esculentus L. [excluded] | CYESE2 |
| yellow nutsedge | Cyperus esculentus L. var. hermannii (Buckl.) Britt. | CYESH |
| yellow nutsedge | Cyperus esculentus L. var. leptostachyus Boeckl. | CYESL |
| yellow nutsedge | Cyperus esculentus L. var. macrostachyus Boeckl. | CYESM |
| yellow nutsedge | Cyperus esculentus L. var. sativus Boeckl. | CYESS |
| yellow sedge | Carex flava L. | CAFL4 |
| yellow spikerush | Eleocharis flavescens (Poir.) Urban | ELFL |
| yellow spikerush | Eleocharis flavescens (Poir.) Urban var. flavescens | ELFLF |
| yellow spikerush | Eleocharis flavescens (Poir.) Urban var. thermalis (Rydb.) Cronq. | ELFLT |
| yellowfruit sedge | Carex annectens (Bickn.) Bickn. | CAAN6 |
| yerba de estrella | Rhynchospora nervosa (Vahl) Boeckl. | RHNE |
| yerba de estrella | Rhynchospora nervosa (Vahl) Boeckl. ssp. ciliata (Vahl) T. Koyama | RHNEC |
| Yosemite bulrush | Trichophorum clementis (M.E. Jones) S.G. Sm. | TRCL3 |
| Yosemite sedge | Carex sartwelliana Olney | CASA7 |
| Yukon sedge | Carex bonanzensis Britt. | CABO3 |
Plant List