| Common Name | Scientific Name | Code |
| n/a | Aidia cochinchinensis Lour. | AICO2 |
| n/a | Aidia Lour. | AIDIA |
| n/a | Bikkia Reinw. | BIKKI |
| n/a | Bikkia tetrandra (L. f.) A. Rich. | BITE4 |
| n/a | Coprosma ?molokaiensis St. John (pro sp.) [ochracea ? ternata] | COMO2 |
| n/a | Damnacanthus Gaertn. f. | DAMNA |
| n/a | Damnacanthus indicus C. F. Gaertn. | DAIN8 |
| n/a | Dentella J. R. Forst. & G. Forst. | DENTE |
| n/a | Dentella repens J. R. Forst. & G. Forst. | DERE6 |
| n/a | Exostema sanctae-luciae (Kentish) Britt. [excluded] | EXSA2 |
| n/a | Galium ?pomeranicum Retz. [album ? verum] | GAPO3 |
| n/a | Gouldia Gray | GOULD2 |
| n/a | Guettarda speciosa L. | GUSP3 |
| n/a | Hedyotis foetida (G. Forst.) J. E. Sm. var. mariannensis (Merr.) Fosberg | HEFOM |
| n/a | Hedyotis foetida (G.Forst.) Sm. | HEFO6 |
| n/a | Hedyotis fruticulosa (Volkens) Merr. | HEFR6 |
| n/a | Hedyotis megalantha Merr. | HEME8 |
| n/a | Hedyotis rigida Fosberg var. rigida Fosberg [excluded] | HERIR2 |
| n/a | Hedyotis rigida Fosberg var. tenuifolia Fosberg [excluded] | HERIT3 |
| n/a | Hedyotis rigida Fosberg [excluded] | HERI6 |
| n/a | Hedyotis sariganensis Hosok., nomen nudum | HESA16 |
| n/a | Hedyotis scabridifolia Kaneh. | HESC18 |
| n/a | Hedyotis schlechtendahliana Steud. ssp. waimeae W.L. Wagner & D.H. Lorence | HESCW |
| n/a | Hedyotis strigulosa (Bartl. ex DC.) Fosberg | HEST9 |
| n/a | Houstonia acerosa (Gray) Gray ex Benth. & Hook. f. var. polypremoides (Gray) Terrell | HOACP2 |
| n/a | Hydrophylax L. f. | HYDRO10 |
| n/a | Hydrophylax maritima L. f. [excluded] | HYMA9 |
| n/a | Ixora casei Hance | IXCA2 |
| n/a | Ixora chinensis sensu Stone pro parte non Lam. | IXCH |
| n/a | Ixora finlaysoniana Wall. ex G. Don | IXFI |
| n/a | Ixora grandiflora Zoll. & Moritzi [excluded] | IXGR2 |
| n/a | Ixora macrothyrsa Teijsm. & Binn. | IXMA2 |
| n/a | Ixora triantha Volkens | IXTR |
| n/a | Mitracarpus frigidus (Willd. ex Roemer & J.A. Schultes) K. Schum. [excluded] | MIFR7 |
| n/a | Mussaenda frondosa sensu Forst. f. non L. | MUFR3 |
| n/a | Mussaenda L. | MUSSA |
| n/a | Mussaenda philippica A. Rich. | MUPH |
| n/a | Neonauclea forsteri Merrill | NEFO2 |
| n/a | Neonauclea Merr. | NEONA |
| n/a | Oldenlandia biflora L. [excluded] | OLBI2 |
| n/a | Oldenlandia herbacea (L.) Roxb. [excluded] | OLHE3 |
| n/a | Paederia tomentosa Blume | PATO5 |
| n/a | Pentanisia ouranogyne S. Moore | PEOU |
| n/a | Pentas longiflora Oliv. | PELO11 |
| n/a | Psychotria hombroniana (Baill.) Fosberg | PSHO8 |
| n/a | Psychotria hombroniana (Baill.) Fosberg var. hombroniana (Baill.) Fosb. | PSHOH |
| n/a | Psychotria hombroniana (Baill.) Fosberg var. squarrosa (Valeton) Fosberg | PSHOS |
| n/a | Psychotria insularum Gray [excluded] | PSIN10 |
| n/a | Psychotria malaspinae Merr. | PSMA15 |
| n/a | Psychotria nervosa Sw. var. rufescens (Kunth) Steyermark [excluded] | PSNER2 |
| n/a | Psychotria rotensis Kaneh. | PSRO2 |
| n/a | Psydrax Gaertn. | PSYDR |
| n/a | Putoria calabrica (L. f.) Pers. | PUCA2 |
| n/a | Putoria Pers. | PUTOR |
| n/a | Sarcopygme pacifica (Reinecke) Setchell & Christophersen | SAPA35 |
| n/a | Sarcopygme Setch. & Christoph. | SARCO10 |
| n/a | Scyphiphora Gaertn. f. | SCYPH |
| n/a | Scyphiphora hydrophyllacea Gaertn. | SCHY5 |
| n/a | Spermacoce ernstii Fosberg & Powell | SPER5 |
| n/a | Spermacoce tenella Kunth [excluded] | SPTE14 |
| n/a | Stenaria nigricans (Lam.) Terrell var. gypsophila (B.L. Turner) Terrell | STNIG |
| n/a | Stenaria Raf. ex Steud. | STENA3 |
| n/a | Tarenna Gaertn. | TAREN |
| n/a | Tarenna sambucina (G.Forst.) Durand | TASA2 |
| n/a | Timonius DC. | TIMON |
| n/a | Timonius ledermannii Valeton | TILE4 |
| n/a | Timonius nitidus (Bartl. ex DC.) Fern.-Vill.. | TINI |
| n/a | Valantia hispida L. | VAHI3 |
| n/a | Valantia L. | VALAN |
| 'ahakea | Bobea Gaud. | BOBEA |
| 'ahakea | Bobea timonioides (Hook. f.) Hbd. | BOTI |
| 'ahakea lau nui | Bobea elatior Gaud. | BOEL3 |
| 'aiakanene | Coprosma ernodeoides Gray | COER3 |
| 'akupa | Bobea brevipes Gray | BOBR3 |
| 'awiwi | Hedyotis cookiana (Cham. & Schlecht.) Steud. | HECO13 |
| 'olena | Coprosma waimeae Wawra | COWA4 |
| 'opiko | Psychotria mauiensis Fosberg | PSMA7 |
| 'uiwi | Hedyotis elatior (Mann) Fosberg | HEEL4 |
| alahe'e | Psydrax odorata (G. Forst.) A.C. Sm. & S. Darwin | PSOD |
| alfilerillo | Machaonia woodburyana Acev.-Rodr. | MAWO3 |
| alpine bedstraw | Galium hypotrichium Gray | GAHY |
| alpine bedstraw | Galium hypotrichium Gray ssp. hypotrichium | GAHYH |
| alpine bedstraw | Galium hypotrichium Gray ssp. tomentellum Ehrend. | GAHYT |
| alpine mirrorplant | Coprosma montana Hbd. | COMO3 |
| Andrews's bedstraw | Galium andrewsii Gray ssp. andrewsii | GAANA |
| ant plant | Hydnophytum formicarium Jack. | HYFO6 |
| ant plant | Hydnophytum Jack. | HYDNO3 |
| Antirhea acutata | Stenostomum acutatum DC. | STAC2 |
| Antirhea coriacea | Stenostomum coriaceum (Vahl) Griseb. | STCO12 |
| Antirhea lucida | Laugeria lucida Sw. | LALU2 |
| Antirhea lucida | Stenostomum lucidum (Sw.) Gaertn. f. | STLU3 |
| Antirhea obtusifolia | Stenostomum obtusifolium (Urban) Britt. & P. Wilson | STOB3 |
| Antirhea portoricensis | Stenostomum portoricense Britt. & P. Wilson | STPO4 |
| Antirhea sintenisii | Stenostomum sintenisii (Urban) Britt. & P. Wilson | STSI7 |
| aquilon | Neolaugeria resinosa (Vahl) Nicols. | NERE2 |
| aquilon prieto | Phialanthus grandifolius Alain | PHGR11 |
| Arabian coffee | Coffea arabica L. | COAR2 |
| Argus bedstraw | Galium argense Dempster & Ehrend. | GAAR3 |
| Arkansas bedstraw | Galium arkansanum Gray | GAAR4 |
| au | Hedyotis acuminata (Cham. & Schlecht.) Steud. | HEAC3 |
| awned bedstraw | Galium aristatum L. | GAAR5 |
| azure bluet | Houstonia caerulea L. | HOCA4 |
| Bahama wild coffee | Psychotria ligustrifolia (Northrop) Millsp. | PSLI2 |
| bald bedstraw | Galium orizabense Hemsl. | GAOR2 |
| bald bedstraw | Galium orizabense Hemsl. ssp. laevicaule (Weatherby & Blake) Dempster | GAORL |
| baldhead false buttonweed | Spermacoce capitata Ruiz & Pav?n | SPCA18 |
| balsamillo | Hamelia axillaris Sw. | HAAX |
| bedstraw | Cruciata P. Mill. | CRUCI2 |
| bedstraw | Galium L. | GALIU |
| bengal coffee | Coffea benghalensis Heyne ex Schultes | COBE6 |
| blacktorch | Erithalis fruticosa L. | ERFR4 |
| blacktorch | Erithalis P. Br. | ERITH |
| blue fieldmadder | Sherardia arvensis L. | SHAR2 |
| blue woodruff | Asperula arvensis L. | ASAR2 |
| bluet | Houstonia L. | HOUST |
| bluntleaf bedstraw | Galium obtusum Bigelow | GAOB |
| bluntleaf bedstraw | Galium obtusum Bigelow ssp. australe Puff | GAOBA |
| bluntleaf bedstraw | Galium obtusum Bigelow ssp. filifolium (Wieg.) Puff | GAOBF2 |
| bluntleaf bedstraw | Galium obtusum Bigelow ssp. obtusum | GAOBO |
| Bobea brevipes | Bobea elatior Gaud. var. brevipes (Gray) Hbd. | BOELB |
| Bobea brevipes | Bobea mannii Hbd. | BOMA4 |
| Bobea elatior | Bobea elatior Gaud. var. molokaiensis Rock | BOELM |
| Bobea elatior | Bobea gaudichaudii (Cham. & Schlecht.) St. John & Herbst | BOGA |
| Bobea elatior | Bobea platypes Fosberg | BOPL |
| Bobea sandwicensis | Bobea hookeri Hbd. | BOHO2 |
| bog mirrorplant | Coprosma elliptica Oliver | COEL3 |
| bola de nieve | Ixora acuminata Roxb. | IXAC |
| Bolander's bedstraw | Galium bolanderi Gray | GABO |
| boreal bedstraw | Galium kamtschaticum Steller ex J.A. & J.H. Schultes | GAKA |
| Borrego bedstraw | Galium angustifolium Nutt. ex Gray ssp. borregoense Dempster & Stebbins | GAANB |
| Bosc's mille graines | Oldenlandia boscii (DC.) Chapman | OLBO |
| bouquet false buttonweed | Spermacoce densiflora (DC.) Alain | SPDE3 |
| bouvardia | Bouvardia Salisb. | BOUVA |
| Bouvardia ternifolia | Bouvardia glaberrima Engelm. | BOGL3 |
| box bedstraw | Galium buxifolium Greene | GABU |
| bracted bedstraw | Galium microphyllum Gray | GAMI |
| bristly bedstraw | Galium uncinulatum DC. | GAUN |
| broadleaf false buttonweed | Spermacoce ovalifolia (Mart. & Gal.) Hemsl. | SPOV3 |
| Browne's wild coffee | Psychotria brownei Spreng. | PSBR3 |
| bushy bedstraw | Galium matthewsii Gray | GAMA4 |
| Butterwick's starviolet | Stenaria butterwickiae (Terrell) Terrell | STBU4 |
| buttonbush | Cephalanthus L. | CEPHA |
| buttonweed | Diodia L. | DIODI |
| cachimbo de gato | Psychotria maleolens Urban | PSMA4 |
| cachimbo de maricao | Psychotria maricaensis Urban | PSMA5 |
| cachimbo grande | Psychotria grandis Sw. | PSGR2 |
| cachimbo-cumun | Psychotria berteriana DC. | PSBE |
| California bedstraw | Galium californicum Hook. & Arn. | GACA3 |
| California bedstraw | Galium californicum Hook. & Arn. ssp. californicum | GACAC |
| California bedstraw | Galium californicum Hook. & Arn. ssp. flaccidum (Greene) Dempster & Stebbins | GACAF |
| California bedstraw | Galium californicum Hook. & Arn. ssp. maritimum Dempster & Stebbins | GACAM |
| California bedstraw | Galium californicum Hook. & Arn. ssp. primum Dempster & Stebbins | GACAP |
| calycophyllum | Calycophyllum DC. | CALYC9 |
| Calycophyllum candidissimum | Macrocnemum candidissimum Vahl | MACA27 |
| calycose mille graines | Oldenlandia lancifolia (Schumacher) DC. | OLLA2 |
| cana gorda girdlepod | Mitracarpus polycladus Urban | MIPO2 |
| Canadian summer bluet | Houstonia canadensis Willd. ex Roemer & J.A. Schultes | HOCA5 |
| candlewood | Phialanthus myrtilloides Griseb. | PHMY |
| Cape jasmine | Gardenia jasminoides Ellis | GAJA |
| cappel | Palicourea Aubl. | PALIC |
| Caribbean princewood | Exostema caribaeum (Jacq.) J.A. Schultes | EXCA |
| carretilla | Diodia dasycephala Cham. & Schlecht. | DIDA |
| casasia | Casasia A. Rich. | CASAS |
| Casasia clusiifolia | Genipa clusiifolia Jacq. | GECL2 |
| Casasia clusiifolia | Randia clusiifolia (Jacq.) Chapman | RACL |
| Castle Lake bedstraw | Galium glabrescens (Ehrend.) Dempster & Ehrend. | GAGL2 |
| Castle Lake bedstraw | Galium glabrescens (Ehrend.) Dempster & Ehrend. ssp. glabrescens | GAGLG |
| Castle Lake bedstraw | Galium glabrescens (Ehrend.) Dempster & Ehrend. ssp. harticum Dempster & Ehrend. | GAGLH |
| Castle Lake bedstraw | Galium glabrescens (Ehrend.) Dempster & Ehrend. ssp. josephinense Dempster & Ehrend. | GAGLJ |
| cephaelis | Cephaelis Sw. | CEPHA9 |
| Cephaelis ipecacuanha | Psychotria ipecacuanha (Brot.) Stokes | PSIP |
| Cephalanthus occidentalis | Cephalanthus occidentalis L. var. californicus Benth. | CEOCC2 |
| Cephalanthus occidentalis | Cephalanthus occidentalis L. var. pubescens Raf. | CEOCP2 |
| cheakyberry | Psychotria domingensis Jacq. | PSDO2 |
| Chiococca alba | Chiococca racemosa L. | CHRA6 |
| Chiococca alba | Lonicera alba L. | LOAL3 |
| Chiococca parvifolia | Chiococca pinetorum Britt. ex Millsp. | CHPI4 |
| chione | Chione DC. | CHION3 |
| cinchona | Cinchona L. | CINCH |
| Cinchona calisaya | Cinchona ledgeriana Moens ex Trimen | CILE4 |
| Cinchona pubescens | Cinchona succirubra Pavon ex Klotzsch | CISU2 |
| cliff bedstraw | Galium correllii Dempster | GACO6 |
| cliff-dwelling starviolet | Hedyotis flynnii W.L. Wagner & D.H. Lorence | HEFL16 |
| climbing bedstraw | Galium nuttallii Gray | GANU |
| climbing bedstraw | Galium nuttallii Gray ssp. insulare Ferris | GANUI |
| climbing bedstraw | Galium nuttallii Gray ssp. nuttallii | GANUN |
| clustered mille graines | Oldenlandia uniflora L. | OLUN |
| coastal bedstraw | Galium hispidulum Michx. | GAHI |
| coccocypselum | Coccocypselum P. Br. | COCCO3 |
| Coccocypselum herbaceum | Tontanea herbacea (Aubl.) Standl. | TOHE2 |
| coffea | Coffea stenophylla G. Don | COST17 |
| Coffea canephora | Coffea robusta L. Linden | CORO8 |
| Coffea liberica | Coffea dewevrei Wildm. & T. Dur. | CODE11 |
| Coffea liberica | Coffea excelsa A. Chev. | COEX |
| coffee | Coffea L. | COFFE |
| Colorado bedstraw | Galium coloradoense W. Wight | GACO2 |
| common buttonbush | Cephalanthus occidentalis L. | CEOC2 |
| common gardenia | Gardenia volkensii K.Schum. | GAVO2 |
| common marsh bedstraw | Galium palustre L. | GAPA3 |
| Cone Peak bedstraw | Galium californicum Hook. & Arn. ssp. luciense Dempster & Stebbins | GACAL |
| congo coffee | Coffea congensis Froehner | COCO27 |
| Coprosma ernodeoides | Coprosma ernodeoides Gray var. mauiensis St. John | COERM |
| Coprosma foliosa | Coprosma fauriei Levl. | COFA3 |
| Coprosma foliosa | Coprosma fauriei Levl. var. lanaiensis Oliver | COFAL |
| Coprosma foliosa | Coprosma fauriei Levl. var. oahuensis Oliver | COFAO |
| Coprosma foliosa | Coprosma skottsbergiana Oliver | COSK |
| Coprosma foliosa | Coprosma stephanocarpa Hbd. | COST9 |
| Coprosma granadensis | Gomozia granadensis L. f. | GOGR |
| Coprosma granadensis | Nertera granadensis (L. f.) Druce | NEGR2 |
| Coprosma granadensis | Nertera granadensis (L. f.) Druce var. insularis Skottsberg | NEGRI |
| Coprosma longifolia | Coprosma longifolia Gray var. oppositifolia Fosberg | COLOO |
| Coprosma montana | Coprosma montana Hbd. var. crassa Oliver | COMOC2 |
| Coprosma montana | Coprosma montana Hbd. var. orbicularis Oliver | COMOO |
| Coprosma ochracea | Coprosma ochracea Oliver var. kaalae St. John | COOCK |
| Coprosma ochracea | Coprosma ochracea Oliver var. rockiana Oliver | COOCR |
| Coprosma ochracea | Coprosma pubens Gray var. sessiliflora Oliver | COPUS |
| Coprosma pubens | Coprosma serrata St. John | COSE9 |
| cordobancillo | Rondeletia inermis (Spreng.) Krug & Urban | ROIN4 |
| cordobancillo | Rondeletia L. | RONDE |
| cordobancillo peludo | Rondeletia pilosa Sw. | ROPI3 |
| Correll's bluet | Houstonia correllii (W.H. Lewis) Terrell | HOCO2 |
| corrida yerba de guava | Geophila repens (L.) I.M. Johnston | GERE3 |
| coughbush | Ernodea littoralis Sw. | ERLI5 |
| creeping mirrorplant | Coprosma repens A. Rich. | CORE4 |
| creeping-bluet | Oldenlandiopsis callitrichoides (Griseb.) Terrell & W.H. Lewis | OLCA4 |
| creeping-bluet | Oldenlandiopsis Terrell & W.H. Lewis | OLDEN2 |
| Croft's bluet | Houstonia croftiae Britt. & Rusby | HOCR |
| crucianella | Crucianella L. | CRUCI |
| Cruciata laevipes | Galium cruciata (L.) Scop. | GACR3 |
| Cruciata pedemontana | Galium pedemontanum (Bellardi) All. | GAPE |
| Cruciata pedemontana | Vaillantia pedemontana Bellardi | VAPE3 |
| crucillo | Randia rhagocarpa Standl. | RARH2 |
| Crusea diversifolia | Crusea subulata (DC.) Gray | CRSU8 |
| Crusea diversifolia | Crusea wrightii Gray | CRWR |
| cucubano | Guettarda ovalifolia Urban | GUOV |
| cucubano de monte | Guettarda valenzuelana A. Rich. | GUVA |
| cucubano de vieques | Guettarda odorata (Jacq.) Lam. | GUOD |
| curl-leaf wild coffee | Psychotria revoluta DC. | PSRE2 |
| Day's bedstraw | Galium serpenticum Dempster ssp. dayense Dempster & Ehrend. | GASED |
| degame | Calycophyllum candidissimum (Vahl) DC. | CACA73 |
| desert bedstraw | Galium desereticum Dempster & Ehrend. | GADE3 |
| diamond-flowers | Stenaria nigricans (Lam.) Terrell | STNI6 |
| diamondflowers | Stenaria nigricans (Lam.) Terrell var. nigricans | STNIN |
| Diodia apiculata | Diodella rigida (Willd. ex Roemer & J.A. Schultes) Small | DIRI3 |
| Diodia apiculata | Diodia rigida (Willd. ex Roemer & J.A. Schultes) Cham. & Schlecht. | DIRI4 |
| Diodia ocymifolia | Hemidiodia ocymifolia (Willd. ex Roemer & J.A. Schultes) K. Schum. | HEOC4 |
| Diodia serrulata | Diodia maritima Thonn. | DIMA7 |
| Diodia serrulata | Spermacoce serrulata Beauv. | SPSE2 |
| Diodia teres var. teres | Diodella teres (Walt.) Small | DITE6 |
| Diodia teres var. teres | Diodia teres Walt. var. setifera Fern. & Grisc. | DITES |
| Diodia virginiana var. virginiana | Diodia harperi Small | DIHA |
| Diodia virginiana var. virginiana | Diodia hirsuta Pursh | DIHI6 |
| Diodia virginiana var. virginiana | Diodia tetragona Walt. | DITE7 |
| dotted wild coffee | Psychotria punctata Vatke | PSPU2 |
| Ebbett's bedstraw | Galium hypotrichium Gray ssp. ebbettsense Dempster & Ehrend. | GAHYE |
| Egyptian starcluster | Pentas lanceolata (Forssk.) Deflers | PELA19 |
| El Dorado bedstraw | Galium californicum Hook. & Arn. ssp. sierrae Dempster & Stebbins | GACAS |
| Emery County bedstraw | Galium emeryense Dempster & Ehrend. | GAEM |
| Emery County bedstraw | Galium emeryense Dempster & Ehrend. ssp. emeryense | GAEME |
| Emery County bedstraw | Galium emeryense Dempster & Ehrend. ssp. protoscabriusculum (Dempster & Ehrend.) Dempster & Ehrend. | GAEMP |
| Erithalis fruticosa | Erithalis revoluta Urban | ERRE6 |
| ernodea | Ernodea Sw. | ERNOD |
| Ernodea littoralis | Ernodea angusta Small | ERAN16 |
| Ernodea littoralis | Ernodea littoralis Sw. var. angusta (Small) R.W. Long | ERLIA |
| espuela de galan | Scolosanthus grandifolius Krug & Urban | SCGR5 |
| European bedstraw | Galium rubioides L. | GARU |
| Everglade Eey false buttonweed | Spermacoce terminalis (Small) Kartesz & Gandhi | SPTE8 |
| exostema | Exostema (Pers.) L.C. Rich. ex Humb. & Bonpl. | EXOST |
| Exostema caribaeum | Cinchona caribaea Jacq. | CICA14 |
| false baby's breath | Galium mollugo L. | GAMO |
| false bluet | Lucya tetrandra (L.) K. Schum. | LUTE2 |
| false buttonweed | Spermacoce L. | SPERM |
| false coffee | Faramea Aubl. | FARAM |
| false coffee | Faramea occidentalis (L.) A. Rich. | FAOC |
| Faramea occidentalis | Ixora occidentalis L. | IXOC |
| fatpork | Chione venosa (Sw.) Urban | CHVE4 |
| Fendler's bedstraw | Galium fendleri Gray | GAFE |
| fevertree | Pinckneya bracteata (Bartr.) Raf. | PIBR6 |
| firecrackerbush | Bouvardia ternifolia (Cav.) Schlecht. | BOTE2 |
| flat-top mille graines | Oldenlandia corymbosa L. | OLCO |
| floating balsamo | Psychotria nutans Sw. | PSNU2 |
| Florida diamondflowers | Stenaria nigricans (Lam.) Terrell var. floridana (Standl.) Terrell | STNIF |
| Florida false buttonweed | Spermacoce floridana Urban | SPFL4 |
| forest gardenia | Gardenia brighamii Mann | GABR |
| forest mirrorplant | Coprosma foliosa Gray | COFO2 |
| forest starviolet | Hedyotis centranthoides (Hook. & Arn.) Steud. | HECE |
| forest wild coffee | Psychotria mariniana (Cham. & Schlecht.) Fosberg | PSMA6 |
| Fosberg's starviolet | Hedyotis fosbergii W.L. Wagner & Herbst | HEFO5 |
| Fossil Hill Creek bedstraw | Galium collomiae J.T. Howell | GACO |
| fragrant bedstraw | Galium triflorum Michx. | GATR3 |
| frogwood | Guettarda krugii Urban | GUKR |
| Galium ?pomeranicum | Galium ?ochroleucum Wolf ex Schweig. | GAOC |
| Galium ambiguum | Galium ambiguum Wight var. ambiguum Wight [superfluous autonym] | GAAMA2 |
| Galium ambiguum ssp. siskiyouense | Galium ambiguum W. Wight var. siskiyouense Ferris | GAAMS |
| Galium andrewsii ssp. gatense | Galium andrewsii Gray var. gatense Dempster | GAANG4 |
| Galium angustifolium ssp. angustifolium | Galium angustifolium Nutt. ex Gray var. bernardinum Hilend & Howell | GAANB2 |
| Galium angustifolium ssp. angustifolium | Galium angustifolium Nutt. ex Gray var. diffusum Hilend & Howell | GAAND |
| Galium angustifolium ssp. angustifolium | Galium angustifolium Nutt. ex Gray var. siccatum (W. Wight) Hilend & Howell | GAANS |
| Galium angustifolium ssp. angustifolium | Galium angustifolium Nutt. ex Gray var. typicum Hilend & Howell | GAANT |
| Galium angustifolium ssp. angustifolium | Galium siccatum W. Wight | GASI3 |
| Galium angustifolium ssp. angustifolium | Galium trichocarpum Nutt. | GATR7 |
| Galium angustifolium ssp. foliosum | Galium angustifolium Nutt. ex Gray var. foliosum Hilend & Howell | GAANF2 |
| Galium angustifolium ssp. gabrielense | Galium gabrielense Munz & Johnston | GAGA2 |
| Galium angustifolium ssp. gabrielense | Galium siccatum W. Wight var. anotinum Jepson | GASIA |
| Galium angustifolium ssp. onycense | Galium angustifolium Nutt. ex Gray var. onycense Dempster | GAANO2 |
| Galium aparine | Galium agreste Wallr. var. echinospermum Wallr. | GAAGE |
| Galium aparine | Galium aparine L. ssp. spurium (L.) Simonkai | GAAPS |
| Galium aparine | Galium aparine L. var. echinospermum (Wallr.) Farw. | GAAPE |
| Galium aparine | Galium aparine L. var. intermedium (Merr.) Briq. | GAAPI |
| Galium aparine | Galium aparine L. var. minor Hook. | GAAPM |
| Galium aparine | Galium aparine L. var. vaillantii (DC.) Koch | GAAPV |
| Galium aparine | Galium spurium L. | GASP3 |
| Galium aparine | Galium spurium L. var. echinospermum (Wallr.) Hayek | GASPE |
| Galium aparine | Galium spurium L. var. vaillantii (DC.) Gren. & Godr. | GASPV |
| Galium aparine | Galium vaillantii DC. | GAVA |
| Galium arkansanum | Galium arkansanum Gray var. pubiflorum E.B. Sm. | GAARP |
| Galium bolanderi | Galium arcuatum Wieg. | GAAR6 |
| Galium bolanderi | Galium culbertsonii Greene | GACU |
| Galium bolanderi | Galium margaricoccum Gray | GAMA7 |
| Galium bolanderi | Galium pubens Gray | GAPU4 |
| Galium bolanderi | Galium pubens Gray var. scabridum Gray | GAPUS |
| Galium bolanderi | Galium subscabridum Wight | GASU3 |
| Galium boreale | Galium boreale L. ssp. septentrionale (Roemer & J.A. Schultes) Hara | GABOS |
| Galium boreale | Galium boreale L. var. hyssopifolium (Hoffmann) DC. | GABOH |
| Galium boreale | Galium boreale L. var. intermedium DC. | GABOI |
| Galium boreale | Galium boreale L. var. linearifolium Rydb. | GABOL |
| Galium boreale | Galium boreale L. var. scabrum DC. | GABOS3 |
| Galium boreale | Galium boreale L. var. typicum G. Beck | GABOT |
| Galium boreale | Galium hyssopifolium Hoffmann | GAHY2 |
| Galium boreale | Galium septentrionale Roemer & J.A. Schultes | GASE6 |
| Galium boreale | Galium strictum Torr. | GAST4 |
| Galium brevipes | Galium trifidum L. ssp. brevipes (Fern. & Wieg.) A.& D. L?ve | GATRB |
| Galium buxifolium | Galium catalinense Gray var. buxifolium (Greene) Dempster | GACAB |
| Galium californicum ssp. flaccidum | Galium californicum Hook. & Arn. var. crebrifolium Nutt. | GACAC3 |
| Galium californicum ssp. flaccidum | Galium californicum Hook. & Arn. var. typicum Hilend & Howell | GACAT |
| Galium californicum ssp. flaccidum | Galium flaccidum Greene | GAFL6 |
| Galium californicum ssp. flaccidum | Galium occidentale McClatchie | GAOC2 |
| Galium californicum ssp. miguelense | Galium californicum Hook. & Arn. var. miguelense (Greene) Jepson | GACAM3 |
| Galium californicum ssp. miguelense | Galium miguelense Greene | GAMI4 |
| Galium circaezans var. circaezans | Galium bermudense L. p.p. | GABE3 |
| Galium circaezans var. circaezans | Galium boreale sensu Walt., non L. | GABO4 |
| Galium circaezans var. circaezans | Galium brachiatum sensu Muhl., non Pursh | GABR7 |
| Galium circaezans var. circaezans | Galium circaeoides Roemer & J.A. Schultes | GACI3 |
| Galium circaezans var. circaezans | Galium circaezans Michx. var. glabellum Britt. | GACIG |
| Galium circaezans var. circaezans | Galium circaezans Michx. var. glabrum Britt. | GACIG2 |
| Galium circaezans var. circaezans | Galium circaezans Michx. var. typicum Fern. | GACIT |
| Galium circaezans var. circaezans | Galium rotundifolium L. var. circaezans (Michx.) Kuntze | GAROC |
| Galium cliftonsmithii | Galium nuttallii Gray var. cliftonsmithii Dempster | GANUC |
| Galium coloradoense | Galium multiflorum Kellogg var. coloradoense (W. Wight) Cronq. | GAMUC |
| Galium divaricatum | Galium anglicum Huds. | GAAN7 |
| Galium divaricatum | Galium anglicum Huds. var. parvifolium (Gaud. ex Roemer & J.A. Schultes) DC. | GAANP |
| Galium divaricatum | Galium parisiense L. ssp. anglicum (Huds.) Gaud. | GAPAA |
| Galium divaricatum | Galium parisiense L. ssp. parvifolium (Gaud. ex Roemer & J.A. Schultes) Gaud. | GAPAP |
| Galium divaricatum | Galium parisiense L. var. anglicum (Huds.) G. Beck | GAPAA2 |
| Galium divaricatum | Galium parisiense L. var. divaricatum (Pourret ex Lam.) Vis. | GAPAD |
| Galium divaricatum | Galium parisiense L. var. leiocarpum Tausch | GAPAL2 |
| Galium divaricatum | Galium parvifolium Gaud. ex Roemer & J.A. Schultes | GAPA9 |
| Galium emeryense ssp. emeryense | Galium coloradoense W. Wight var. scabriusculum (Ehrend.) Dempster & Ehrend. | GACOS |
| Galium emeryense ssp. emeryense | Galium hypotrichium Gray ssp. scabriusculum Ehrend. | GAHYS2 |
| Galium emeryense ssp. emeryense | Galium scabriusculum (Ehrend.) Dempster & Ehrend. | GASC |
| Galium emeryense ssp. protoscabriusculum | Galium scabriusculum (Ehrend.) Dempster & Ehrend. ssp. protoscabriusculum Dempster & Ehrend. | GASCP |
| Galium glabrescens ssp. glabrescens | Galium grayanum Ehrend. ssp. glabrescens Ehrend. | GAGRG2 |
| Galium glaucum | Asperula galioides Bieb. | ASGA5 |
| Galium glaucum | Asperula glauca (L.) Bess. | ASGL |
| Galium grande | Galium pubens Gray var. grande (McClatchie) Jepson | GAPUG |
| Galium hilendiae ssp. carneum | Galium munzii Hilend & Howell var. carneum Hilend & Howell | GAMUC2 |
| Galium hilendiae ssp. kingstonense | Galium munzii Hilend & Howell var. kingstonense Dempster | GAMUK |
| Galium hispidulum | Bataprine hispidula (Michx.) Nieuwl. | BAHI6 |
| Galium hispidulum | Galium carolinianum F.G. Dietr. | GACA9 |
| Galium hispidulum | Galium hispidum Pursh | GAHI4 |
| Galium hispidulum | Galium peregrina (Walt.) B.S.P., non Franch. | GAPE4 |
| Galium hispidulum | Rubia brownei Michx., non R. Br. | RUBR7 |
| Galium hispidulum | Rubia peregrina Walt., non L. | RUPE12 |
| Galium hispidulum | Rubia walteri DC. | RUWA2 |
| Galium hispidulum | Valantia hypocarpia L., non R. Br. | VAHY |
| Galium humifusum | Asperula humifusa (Bieb.) Bess. | ASHU4 |
| Galium hypotrichium ssp. subalpinum | Galium multiflorum Kellogg var. subalpinum (Hilend & Howell) Cronq. | GAMUS |
| Galium hypotrichium ssp. subalpinum | Galium munzii Hilend & Howell var. subalpinum Hilend & Howell | GAMUS2 |
| Galium hypotrichium ssp. tomentellum | Galium hypotrichium Gray var. tomentellum (Ehrend.) Dempster | GAHYT2 |
| Galium jepsonii | Galium angustifolium Nutt. ex Gray var. subglabrum Jepson | GAANS2 |
| Galium johnstonii | Galium angustifolium Nutt. ex Gray var. pinetorum Munz & Johnston | GAANP2 |
| Galium labradoricum | Galium tinctorium (L.) Scop. var. labradoricum Wieg. | GATIL |
| Galium lanceolatum | Galium circaezans Michx. var. lanceolatum (Torr.) Torr. & Gray | GACIL |
| Galium lanceolatum | Galium rotundifolium L. var. lanceolatum (Torr.) Kuntze | GAROL |
| Galium lanceolatum | Galium torreyi Bigelow | GATO |
| Galium latifolium | Galium latifolium Michx. var. hispidifolium Small ex Britt. | GALAH |
| Galium latifolium | Galium latifolium Michx. var. hispidum Small | GALAH2 |
| Galium magnifolium | Galium matthewsii Gray var. magnifolium Dempster | GAMAM |
| Galium mexicanum ssp. asperrimum | Galium asperrimum Gray | GAAS3 |
| Galium mexicanum ssp. asperrimum | Galium mexicanum Kunth var. asperrimum (Gray) Higgins & Welsh | GAMEA3 |
| Galium mexicanum ssp. asperulum | Galium asperrimum Gray var. asperulum Gray | GAASA |
| Galium mexicanum ssp. asperulum | Galium asperulum (Gray) Rydb. | GAAS4 |
| Galium mexicanum ssp. asperulum | Galium filipes Rydb. | GAFI3 |
| Galium mexicanum ssp. asperulum | Galium mexicanum Kunth var. asperulum (Gray) Dempster | GAMEA4 |
| Galium microphyllum | Relbunium microphyllum (Gray) Hemsl. | REMI |
| Galium mollugo | Galium erectum Huds. | GAER3 |
| Galium mollugo | Galium mollugo L. ssp. erectum (Huds.) Briq. | GAMOE |
| Galium mollugo | Galium mollugo L. var. erectum (Huds.) Domin | GAMOE2 |
| Galium multiflorum | Galium bloomeri Gray | GABL |
| Galium multiflorum | Galium bloomeri Gray var. hirsutum Gray | GABLH |
| Galium multiflorum | Galium matthewsii Gray var. scabridum Jepson | GAMAS |
| Galium multiflorum | Galium multiflorum Kellogg var. hirsutum (Gray) Jepson | GAMUH |
| Galium muricatum | Galium chartaceum Wight | GACH |
| Galium nuttallii ssp. nuttallii | Galium suffruticosum Nutt. | GASU5 |
| Galium obtusum ssp. filifolium | Galium filifolium (Wieg.) Small | GAFI5 |
| Galium obtusum ssp. filifolium | Galium obtusum Bigelow var. filifolium (Wieg.) Fern. | GAOBF |
| Galium obtusum ssp. filifolium | Galium tinctorium (L.) Scop. var. filifolium Wieg. | GATIF2 |
| Galium obtusum ssp. obtusum | Galium obtusum Bigelow var. ramosum Gleason | GAOBR |
| Galium obtusum ssp. obtusum | Galium trifidum L. var. latifolium Torr. | GATRL |
| Galium odoratum | Asperula odorata L. | ASOD |
| Galium oreganum | Galium kamtschaticum Steller ex J.A. & J.H. Schultes var. oreganum (Britt.) Piper | GAKAO |
| Galium orizabense ssp. laevicaule | Galium pilosum Ait. var. laevicaule Weatherby & Blake | GAPIL |
| Galium parishii | Galium multiflorum Kellogg var. parvifolium Parish | GAMUP |
| Galium parishii | Galium parvifolium (Parish) Jepson | GAPA10 |
| Galium parisiense | Galium litigiosum (DC.) Gaud. var. nanum DC. | GALIN2 |
| Galium parisiense | Galium parisiense L. var. trichocarpum Tausch | GAPAT |
| Galium parisiense | Galium parisiense L. var. typicum G. Beck | GAPAT2 |
| Galium pilosum var. pilosum | Galium bermudense L. p.p. | GABE3 |
| Galium pilosum var. pilosum | Galium puncticulosum Michx. var. pilosum (Ait.) DC. | GAPUP3 |
| Galium pilosum var. puncticulosum | Galium punctatum Pers. | GAPU5 |
| Galium pilosum var. puncticulosum | Galium puncticulosum Michx. | GAPU7 |
| Galium pilosum var. puncticulosum | Galium purpureum Walt., non L. | GAPU6 |
| Galium pilosum var. puncticulosum | Galium walteri J.F. Gmel. | GAWA2 |
| Galium porrigens var. porrigens | Galium nuttallii Gray ssp. ovalifolium (Dempster) Dempster & Stebbins | GANUO |
| Galium porrigens var. porrigens | Galium nuttallii Gray var. ovalifolium Dempster | GANUO2 |
| Galium porrigens var. tenue | Galium nuttallii Gray ssp. tenue (Dempster) Dempster & Stebbins | GANUT |
| Galium porrigens var. tenue | Galium nuttallii Gray var. tenue Dempster | GANUT2 |
| Galium proliferum | Galium proliferum Gray var. subnudum Greenm. | GAPRS |
| Galium proliferum | Galium virgatum Nutt. var. diffusum Gray | GAVID |
| Galium schultesii | Galium intermedium auct. non Schultes [misapplied] | GAIN7 |
| Galium serpenticum ssp. puberulum | Galium multiflorum Kellogg ssp. puberulum Piper | GAMUP3 |
| Galium serpenticum ssp. puberulum | Galium multiflorum Kellogg var. puberulum (Piper) St. John | GAMUP2 |
| Galium serpenticum ssp. puberulum | Galium watsonii (Gray) Heller ssp. puberulum (Piper) Ehrend. | GAWAP |
| Galium stellatum ssp. eremicum | Galium stellatum Kellogg var. eremicum Hilend & Howell | GASTE3 |
| Galium texense | Galium californicum Hook. & Arn. var. texanum Torr. & Gray | GACAT2 |
| Galium texense | Galium texanum (Torr. & Gray) Wieg., non Scheele | GATE4 |
| Galium tinctorium | Asperula tinctoria L. | ASTI4 |
| Galium tinctorium | Galium claytonii Michx. | GACL3 |
| Galium tinctorium | Galium obtusum Bigelow var. floridanum (Wieg.) Fern. | GAOBF3 |
| Galium tinctorium | Galium tinctorium (L.) Scop. ssp. floridanum (Wieg.) Puff | GATIF |
| Galium tinctorium | Galium tinctorium (L.) Scop. var. diversifolium W. Wight | GATID |
| Galium tinctorium | Galium tinctorium (L.) Scop. var. floridanum Wieg. | GATIF3 |
| Galium tinctorium | Galium trifidum L. ssp. tinctorium (L.) Hara | GATRT2 |
| Galium tinctorium | Galium trifidum L. var. tinctorium (L.) Torr. & Gray | GATRT3 |
| Galium tricornutum | Galium tricorne Stokes p.p. | GATR8 |
| Galium trifidum ssp. columbianum | Galium columbianum Rydb. | GACO10 |
| Galium trifidum ssp. columbianum | Galium cymosum Wieg. | GACY |
| Galium trifidum ssp. columbianum | Galium trifidum L. ssp. pacificum (Wieg.) Piper | GATRP3 |
| Galium trifidum ssp. columbianum | Galium trifidum L. var. pacificum Wieg. | GATRP |
| Galium trifidum ssp. halophilum | Galium trifidum L. var. halophilum Fern. & Wieg. | GATRH3 |
| Galium trifidum ssp. subbiflorum | Galium brandegeei Gray p.p. | GABR8 |
| Galium trifidum ssp. subbiflorum | Galium claytonii Michx. var. subbiflorum (Wieg.) Wieg. | GACLS |
| Galium trifidum ssp. subbiflorum | Galium subbiflorum (Wieg.) Rydb. | GASU4 |
| Galium trifidum ssp. subbiflorum | Galium tinctorium L. var. subbiflorum (Wieg.) Fern. | GATIS |
| Galium trifidum ssp. subbiflorum | Galium trifidum L. var. pusillum Gray | GATRP2 |
| Galium trifidum ssp. subbiflorum | Galium trifidum L. var. subbiflorum Wieg. | GATRS3 |
| Galium trifidum ssp. trifidum | Galium brandegeei Gray p.p. | GABR8 |
| Galium triflorum | Galium brachiatum Pursh | GABR9 |
| Galium triflorum | Galium pennsylvanicum W. Bart. | GAPE5 |
| Galium triflorum | Galium triflorum Michx. var. asprelliforme Fern. | GATRA |
| Galium triflorum | Galium triflorum Michx. var. viridiflorum DC. | GATRV |
| Galium uncinulatum | Galium uncinulatum DC. var. obstipum (Schlecht.) S. Wats. | GAUNO |
| Galium uniflorum | Bataprine uniflora (Michx.) Nieuwl. | BAUN3 |
| Galium verum var. wirtgenii | Galium verum L. ssp. wirtgenii (F.W. Schultz) Oborny | GAVEW |
| Galium verum var. wirtgenii | Galium wirtgenii F.W. Schultz | GAWI |
| Galium virgatum | Galium texanum Scheele | GATE5 |
| Galium virgatum | Galium virgatum Nutt. var. leiocarpum Torr. & Gray | GAVIL |
| Galium watsonii | Galium hypotrichium Gray ssp. utahense Ehrend. | GAHYU |
| Galium watsonii | Galium multiflorum Kellogg var. watsonii Gray | GAMUW |
| Galium wrightii | Galium frankliniense Correll | GAFR3 |
| Galium wrightii | Galium rothrockii Gray | GARO |
| Galium wrightii | Galium wrightii Gray var. rothrockii (Gray) Ehrend. ex Ferris | GAWRR2 |
| gambir | Uncaria gambir (Hunter) Roxb. | UNGA |
| gardenia | Gardenia Ellis | GARDE |
| Gardenia jasminoides | Gardenia angusta (L.) Merr. [orthographic error] | GAAN6 |
| Gardenia jasminoides | Gardenia augusta Merr. nom. illeg. | GAAU2 |
| Gardenia jasminoides | Gardenia florida L. | GAFL7 |
| Gardenia mannii | Gardenia mannii St. John & Kuykend. var. honoluluensis St. John & Kuykend. | GAMAH |
| Gardenia taitensis | Gardenia weissichii St. John | GAWE |
| genipa | Genipa L. | GENIP |
| Genipa americana | Genipa americana L. var. caruto (Kunth) K. Schum. | GEAMC |
| Genipa americana | Genipa caruto Kunth | GECA12 |
| geophila | Geophila D. Don | GEOPH |
| Geophila repens | Geophila herbacea (Jacq.) K. Schum. | GEHE2 |
| Geophila repens | Rondeletia repens L. | RORE4 |
| girdlepod | Mitracarpus Zucc. | MITRA |
| gonzalagunia | Gonzalagunia Ruiz & Pav?n | GONZA |
| Gonzalagunia hirsuta | Duggena hirsuta (Jacq.) Britt. ex Britt. & P. Wilson | DUHI2 |
| Gonzalagunia hirsuta | Gonzalagunia spicata (Lam.) G. Maza | GOSP |
| graceful bedstraw | Galium porrigens Dempster | GAPO |
| graceful bedstraw | Galium porrigens Dempster var. porrigens | GAPOP |
| graceful bedstraw | Galium porrigens Dempster var. tenue (Dempster) Dempster | GAPOT |
| Gray's bedstraw | Galium grayanum Ehrend. | GAGR2 |
| Gray's bedstraw | Galium grayanum Ehrend. var. grayanum | GAGRG |
| Gray's bedstraw | Galium grayanum Ehrend. var. nanum Dempster & Ehrend. | GAGRN |
| Greene's starviolet | Hedyotis greenei (Gray) W.H. Lewis | HEGR17 |
| Greenman's bluet | Houstonia parviflora Holz. ex Greenm. | HOPA3 |
| Guadalupe wild coffee | Psychotria guadalupensis (DC.) Howard | PSGU2 |
| Guadalupe wild coffee | Psychotria guadalupensis (DC.) Howard ssp. grosourdyana (Baill.) Steyermark | PSGUG |
| Guadalupe wild coffee | Psychotria guadalupensis (DC.) Howard ssp. guadalupensis | PSGUG2 |
| guettarda | Guettarda L. | GUETT |
| Guettarda odorata | Guettarda parviflora Vahl | GUPA2 |
| Guettarda odorata | Laugeria odorata Jacq. | LAOD2 |
| Guettarda scabra | Matthiola scabra L. | MASC8 |
| Guettarda valenzuelana | Guettarda laevis Urban | GULA2 |
| hairy bedstraw | Galium pilosum Ait. | GAPI2 |
| hairy bedstraw | Galium pilosum Ait. var. pilosum | GAPIP3 |
| hairy bedstraw | Galium pilosum Ait. var. puncticulosum (Michx.) Torr. & Gray | GAPIP |
| hairy wild coffee | Psychotria pubescens Sw. | PSPU |
| Hale's pentodon | Pentodon pentandrer (K. Schum.) Vatke | PEPE34 |
| Haleakala starviolet | Hedyotis foliosa (Hbd.) Fosberg | HEFO2 |
| Hall's bedstraw | Galium hallii Munz & Johnston | GAHA |
| hamelia | Hamelia Jacq. | HAMEL |
| Hamelia patens | Hamelia erecta Jacq. | HAER3 |
| hammock velvetseed | Guettarda elliptica Sw. | GUEL |
| Hardham's bedstraw | Galium hardhamiae Dempster | GAHA2 |
| Hawai'i dogweed | Bobea sandwicensis (Gray) Hbd. | BOSA2 |
| Hawai'i mirrorplant | Coprosma cymosa Hbd. | COCY3 |
| heath bedstraw | Galium saxatile L. | GASA2 |
| hedyotis | Hedyotis ponapensis Valeton | HEPO10 |
| Hedyotis acuminata | Kadua grandis Gray | KAGR3 |
| Hedyotis centranthoides | Hedyotis centranthoides (Hook. & Arn.) Steud. var. laevis (Wawra) Fosberg | HECEL |
| Hedyotis elatior | Hedyotis elatior (Mann) Fosberg var. ensiformis (Fosberg) Fosberg | HEELE |
| Hedyotis elatior | Hedyotis elatior (Mann) Fosberg var. herbacea (Levl.) Fosberg | HEELH |
| Hedyotis fluviatilis | Hedyotis fluviatilis (Forbes) Fosberg var. hathewayi Fosberg | HEFLH |
| Hedyotis fluviatilis | Hedyotis fluviatilis (Forbes) Fosberg var. kamapuaana (O. Deg.) Fosberg | HEFLK |
| Hedyotis fluviatilis | Hedyotis fluviatilis (Forbes) Fosberg var. kauaiensis Fosberg | HEFLK2 |
| Hedyotis fosbergii | Gouldia st.-johnii Fosberg | GOST2 |
| Hedyotis fosbergii | Gouldia st.-johnii Fosberg var. munroi Fosberg | GOSTM |
| Hedyotis greenei | Houstonia greenei (Gray) Terrell | HOGR3 |
| Hedyotis greenei | Oldenlandia greenei Gray | OLGR |
| Hedyotis hillebrandii | Gouldia hillebrandii Fosberg | GOHI3 |
| Hedyotis hillebrandii | Gouldia hillebrandii Fosberg var. hawaiiensis Fosberg | GOHIH |
| Hedyotis hillebrandii | Gouldia hillebrandii Fosberg var. nodosa Fosberg | GOHIN |
| Hedyotis intricata | Houstonia fasciculata Gray, non Bertol. | HOFA2 |
| Hedyotis mannii | Hedyotis mannii Fosberg var. cuspidata Fosberg | HEMAC |
| Hedyotis mannii | Hedyotis mannii Fosberg var. munroi Fosberg | HEMAM |
| Hedyotis mannii | Hedyotis mannii Fosberg var. scaposa Fosberg | HEMAS |
| Hedyotis mannii | Hedyotis molokaiensis Fosberg | HEMO6 |
| Hedyotis mannii | Hedyotis thyrsoidea Fosberg | HETH2 |
| Hedyotis mannii | Hedyotis thyrsoidea Fosberg var. hillebrandii Fosberg | HETHH |
| Hedyotis parvula | Kadua parvula Gray | KAPA2 |
| Hedyotis schlechtendahliana ssp. remyi | Hedyotis remyi (Hbd.) Fosberg | HERE4 |
| Hedyotis schlechtendahliana ssp. remyi | Hedyotis schlechtendahliana Steud. var. remyi (Hbd.) Fosberg | HESCR3 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis angusta Fosberg | HEAN10 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis angusta Fosberg var. koolauensis Fosberg | HEANK |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis angusta Fosberg var. umbrosa Fosberg | HEANU |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis glaucifolia (Gray) Fosberg var. helleri Fosberg | HEGLH |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis remyi (Hbd.) Fosberg var. nuttallii (Fosberg) Fosberg | HEREN |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis remyi (Hbd.) Fosberg var. plana (Fosberg) Fosberg | HEREP |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis remyi (Hbd.) Fosberg var. silvicola Fosberg | HERES2 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. ssp. rockii Fosberg | HESCR |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. ssp. tenuifolia Fosberg | HESCT |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. glauca (Meyen) Fosberg | HESCG |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. nitens (Wawra) Fosberg | HESCN2 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. nuttallii Fosberg | HESCN3 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. opaca (Wawra) Fosberg | HESCO2 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. plana Fosberg | HESCP |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. reticulata Fosberg | HESCR4 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. schlechtendahliana | HESCS2 |
| Hedyotis schlechtendahliana ssp. schlechtendahliana | Hedyotis schlechtendahliana Steud. var. secundiflora (Hbd.) Fosberg | HESCS |
| Hedyotis schlechtendahliana ssp. waimeae | Hedyotis glaucifolia (Gray) Fosberg | HEGL9 |
| Hedyotis schlechtendahliana ssp. waimeae | Hedyotis glaucifolia (Gray) Fosberg var. subimpressa Fosberg | HEGLS |
| Hedyotis schlechtendahliana ssp. waimeae | Hedyotis glaucifolia (Gray) Fosberg var. waimeae (Wawra) Fosberg | HEGLW |
| Hedyotis terminalis | Gouldia affinis (DC.) Wilbur | GOAF |
| Hedyotis terminalis | Gouldia hirtella (Gray) Hbd. | GOHI5 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. | GOTE3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. angustifolia Fosberg | GOTEA |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. antiqua Fosberg | GOTEA2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. arborescens (Wawra) Fosberg | GOTEA3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. aspera Fosberg | GOTEA4 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. bobeoides Fosberg | GOTEB |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. congesta Fosberg | GOTEC |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. cordata (Wawra) Fosberg | GOTEC2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. coriacea (Hook. & Arn.) Fosberg | GOTEC3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. crassicaulis Fosberg | GOTEC4 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. degeneri Fosberg | GOTED |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. elongata (Heller) Fosberg | GOTEE |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. forbesii Fosberg | GOTEF |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. glabra Fosberg | GOTEG |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. hathewayi Fosberg | GOTEH |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. hosakae Fosberg | GOTEH2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. kaala Fosberg | GOTEK |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. kapuaensis Fosberg | GOTEK2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. konaensis Fosberg | GOTEK3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. lanai Fosberg | GOTEL |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. macrocarpa (Hbd.) Fosberg | GOTEM |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. macrothyrsa Fosberg | GOTEM2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. myrsinoidea Fosberg | GOTEM3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. osteocarpa Fosberg | GOTEO |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. ovata (Wawra) Fosberg | GOTEO2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. parvifolia (Wawra) Fosberg | GOTEP |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. pedunculata Fosberg | GOTEP2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. pseudodichotoma Fosberg | GOTEP3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. pubescens Fosberg | GOTEP4 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. pubistipula Fosberg | GOTEP5 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. purpurea Fosberg | GOTEP6 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. quadrangularis Fosberg | GOTEQ |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. rotundifolia Fosberg | GOTER |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. sclerotica Fosberg | GOTES |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. skottsbergii Fosberg | GOTES2 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. stipulacea (Wawra) Fosberg | GOTES3 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. subcordata Fosberg | GOTES4 |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. tenuicaulis Fosberg | GOTET |
| Hedyotis terminalis | Gouldia terminalis (Hook. & Arn.) Hbd. var. wawrana Fosberg | GOTEW |
| Hilend's bedstraw | Galium hilendiae Dempster & Ehrend. | GAHI3 |
| Hilend's bedstraw | Galium hilendiae Dempster & Ehrend. ssp. hilendiae | GAHIH |
| hillia | Hillia Jacq. | HILLI |
| Hoffmannsegg's wild coffee | Psychotria hoffmannseggiana (Roemer & J.A. Schultes) Muell.-Arg. | PSHO2 |
| Hoffmannsegg's wild coffee | Psychotria hoffmannseggiana (Roemer & J.A. Schultes) Muell.-Arg. var. tribracteata (Sw.) Steyermark | PSHOT |
| Houstonia acerosa var. acerosa | Hedyotis acerosa Gray | HEAC5 |
| Houstonia acerosa var. acerosa | Oldenlandia acerosa (Gray) Gray | OLAC |
| Houstonia acerosa var. polypremoides | Hedyotis acerosa Gray var. bigelovii (Greenm.) W.H. Lewis | HEACB |
| Houstonia acerosa var. polypremoides | Hedyotis acerosa Gray var. polypremoides (Gray) W.H. Lewis | HEACP |
| Houstonia acerosa var. polypremoides | Hedyotis polypremoides (Gray) Shinners | HEPO5 |
| Houstonia acerosa var. polypremoides | Houstonia acerosa (Gray) Gray ex Benth. & Hook. f. ssp. polypremoides (Gray) Terrell | HOACP |
| Houstonia acerosa var. polypremoides | Houstonia polypremoides Gray | HOPO3 |
| Houstonia acerosa var. polypremoides | Houstonia polypremoides Gray var. bigelovii Greenm. | HOPOB |
| Houstonia caerulea | Hedyotis caerulea (L.) Hook. | HECA19 |
| Houstonia caerulea | Houstonia caerulea L. var. faxonorum Pease & Moore | HOCAF |
| Houstonia canadensis | Hedyotis canadensis (Willd. ex Roemer & J.A. Schultes) Fosberg | HECA21 |
| Houstonia canadensis | Hedyotis longifolia (Gaertn.) Hook. var. ciliolata (Torr.) Mohlenbrock | HELOC |
| Houstonia canadensis | Hedyotis purpurea (L.) Torr. & Gray var. ciliolata (Torr.) Fosberg | HEPUC |
| Houstonia canadensis | Hedyotis purpurea (L.) Torr. & Gray var. setiscaphia (L.G. Carr) Fosberg | HEPUS3 |
| Houstonia canadensis | Houstonia canadensis Willd. ex Roemer & J.A. Schultes var. setiscaphia (L.G. Carr) C.F. Reed | HOCAS |
| Houstonia canadensis | Houstonia ciliolata Torr. | HOCI |
| Houstonia canadensis | Houstonia setiscaphia L.G. Carr | HOSE3 |
| Houstonia correllii | Hedyotis correllii W.H. Lewis | HECO22 |
| Houstonia croftiae | Hedyotis croftiae (Britt. & Rusby) Shinners | HECR7 |
| Houstonia humifusa | Hedyotis humifusa Gray | HEHU |
| Houstonia humifusa | Oldenlandia humifusa (Gray) Gray | OLHU |
| Houstonia longifolia | Hedyotis longifolia (Gaertn.) Hook. | HELO7 |
| Houstonia longifolia | Hedyotis longifolia (Gaertn.) Hook. var. tenuifolia (Nutt.) Torr. & Gray | HELOT |
| Houstonia longifolia | Hedyotis nuttalliana Fosberg | HENU2 |
| Houstonia longifolia | Hedyotis purpurea (L.) Torr. & Gray var. longifolia (Gaertn.) Fosberg | HEPUL2 |
| Houstonia longifolia | Hedyotis purpurea (L.) Torr. & Gray var. tenuifolia (Nutt.) Fosberg | HEPUT |
| Houstonia longifolia | Houstonia longifolia Gaertn. var. compacta Terrell | HOLOC2 |
| Houstonia longifolia | Houstonia longifolia Gaertn. var. glabra Terrell | HOLOG |
| Houstonia longifolia | Houstonia longifolia Gaertn. var. tenuifolia (Nutt.) Wood | HOLOT |
| Houstonia longifolia | Houstonia purpurea L. var. tenuifolia (Nutt.) Gray | HOPUT |
| Houstonia longifolia | Houstonia tenuifolia Nutt. | HOTE3 |
| Houstonia longifolia | Oldenlandia purpurea (L.) Gray var. tenuifolia (Nutt.) Gray ex Chapman | OLPUT |
| Houstonia micrantha | Hedyotis australis W.H. Lewis & D.M. Moore | HEAU3 |
| Houstonia micrantha | Hedyotis crassifolia Raf. var. micrantha Shinners | HECRM |
| Houstonia ouachitana | Hedyotis ouachitana E.B. Sm. | HEOU |
| Houstonia parviflora | Hedyotis greenmanii Fosberg | HEGR11 |
| Houstonia procumbens | Hedyotis procumbens (Walt. ex J.F. Gmel.) Fosberg | HEPR7 |
| Houstonia procumbens | Hedyotis procumbens (Walt. ex J.F. Gmel.) Fosberg var. hirsuta W.H. Lewis | HEPRH2 |
| Houstonia procumbens | Houstonia rotundifolia Michx. | HORO2 |
| Houstonia purpurea var. calycosa | Hedyotis lanceolata Poir. | HELA16 |
| Houstonia purpurea var. calycosa | Hedyotis purpurea (L.) Torr. & Gray var. calycosa (Gray) Fosberg | HEPUC2 |
| Houstonia purpurea var. calycosa | Houstonia calycosa (Gray) C. Mohr | HOCA10 |
| Houstonia purpurea var. calycosa | Houstonia lanceolata (Poir.) Britt. | HOLA5 |
| Houstonia purpurea var. montana | Hedyotis purpurea (L.) Torr. & Gray var. montana (Small) Fosberg | HEPUM2 |
| Houstonia purpurea var. montana | Houstonia montana Small | HOMO5 |
| Houstonia purpurea var. purpurea | Hedyotis purpurea (L.) Torr. & Gray | HEPU16 |
| Houstonia purpurea var. purpurea | Houstonia purpurea L. var. pubescens Britt. | HOPUP4 |
| Houstonia pusilla | Hedyotis caerulea (L.) Hook. var. minima (Beck) Fosberg | HECAM |
| Houstonia pusilla | Hedyotis caerulea (L.) Hook. var. minor (Michx.) Torr. & Gray | HECAM2 |
| Houstonia pusilla | Hedyotis crassifolia Raf. | HECR9 |
| Houstonia pusilla | Hedyotis minima (Beck) T. & G. | HEMI19 |
| Houstonia pusilla | Houstonia minima Beck | HOMI2 |
| Houstonia pusilla | Houstonia patens Ell. | HOPA6 |
| Houstonia rosea | Hedyotis rosea Raf. | HERO3 |
| Houstonia rosea | Hedyotis tayloriae Fosberg | HETA |
| Houstonia rosea | Houstonia pygmaea C.H. & M.T. Muller | HOPY |
| Houstonia rubra | Hedyotis rubra (Cav.) Gray | HERU4 |
| Houstonia rubra | Oldenlandia rubra (Cav.) Gray | OLRU |
| Houstonia serpyllifolia | Hedyotis michauxii Fosberg | HEMI15 |
| Houstonia subviscosa | Hedyotis subviscosa (C. Wright ex Gray) Shinners | HESU8 |
| Houstonia subviscosa | Oldenlandia subviscosa C. Wright ex Gray | OLSU2 |
| Houstonia wrightii | Hedyotis cervantesii Kunth | HECE4 |
| Houstonia wrightii | Hedyotis pygmaea Roemer & J.A. Schultes | HEPY |
| Houstonia wrightii | Hedyotis wrightii (Gray) Fosberg | HEWR |
| Humboldt bedstraw | Galium muricatum W. Wight | GAMU5 |
| hupilo | Coprosma menziesii Gray | COME6 |
| Indian mulberry | Morinda citrifolia L. | MOCI3 |
| indigoberry | Randia L. | RANDI |
| Intermountain bedstraw | Galium serpenticum Dempster | GASE2 |
| Intermountain bedstraw | Galium serpenticum Dempster ssp. puberulum (Piper) Dempster & Ehrend. | GASEP |
| Intermountain bedstraw | Galium serpenticum Dempster ssp. scabridum (Ehrend.) Dempster & Ehrend. | GASES |
| Intermountain bedstraw | Galium serpenticum Dempster ssp. serpenticum | GASES3 |
| Intermountain bedstraw | Galium serpenticum Dempster ssp. wenatchicum Dempster & Ehrend. | GASEW2 |
| Inyo bedstraw | Galium hypotrichium Gray ssp. inyoense Dempster & Ehrend. | GAHYI |
| ipecac | Cephaelis ipecacuanha (Brot.) Tussac | CEIP |
| ixora | Ixora L. | IXORA |
| Ixora pavetta | Ixora arborea Sm. | IXAR |
| Ixora pavetta | Ixora parviflora Vahl | IXPA2 |
| jagua | Genipa americana L. | GEAM |
| jasmin de rosa | Randia formosa (Jacq.) K. Schum. | RAFO2 |
| Jepson's bedstraw | Galium jepsonii Hilend & Howell | GAJE |
| Johnston's bedstraw | Galium johnstonii Dempster & Stebbins | GAJO |
| Juan Tomas | Rondeletia portoricensis Krug & Urban | ROPO |
| kadam | Neolamarckia cadamba (Roxb.) F. Bosser | NECA7 |
| Kalalau Valley starviolet | Hedyotis tryblium Herbst & W.L. Wagner | HETR6 |
| kamapua'a | Hedyotis fluviatilis (Forbes) Fosberg | HEFL6 |
| Kauai starviolet | Hedyotis foggiana Fosberg | HEFO |
| Kauai wild coffee | Psychotria greenwelliae Fosberg | PSGR3 |
| kelloggia | Kelloggia Torr. ex Benth. | KELLO |
| Kingston Mountains bedstraw | Galium hilendiae Dempster & Ehrend. ssp. kingstonense (Dempster) Dempster & Ehrend. | GAHIK |
| kio'ele | Hedyotis coriacea Sm. | HECO14 |
| koi | Coprosma kauensis (Gray) Heller | COKA |
| kokee starviolet | Hedyotis knudsenii (Hbd.) Fosberg | HEKN |
| Koolau Range wild coffee | Psychotria fauriei (Levl.) Fosberg | PSFA |
| kopa | Hedyotis schlechtendahliana Steud. | HESC6 |
| kopa | Hedyotis schlechtendahliana Steud. ssp. remyi (Hbd.) Fosberg | HESCR7 |
| kopa | Hedyotis schlechtendahliana Steud. ssp. schlechtendahliana | HESCS4 |
| kopiko 'ula | Psychotria hawaiiensis (Gray) Fosberg | PSHA3 |
| kopiko 'ula | Psychotria hawaiiensis (Gray) Fosberg var. hawaiiensis | PSHAH3 |
| kopiko 'ula | Psychotria hawaiiensis (Gray) Fosberg var. hillebrandii (Rock) Fosberg | PSHAH |
| kopiko 'ula | Psychotria hawaiiensis (Gray) Fosberg var. scoriacea (Rock) Fosberg | PSHAS |
| kopiko kea | Psychotria kaduana (Cham. & Schlecht.) Fosberg | PSKA |
| Lamarck's bedstraw | Galium divaricatum Pourret ex Lam. | GADI |
| lanceleaf wild licorice | Galium lanceolatum Torr. | GALA3 |
| largeflower Mexican clover | Richardia grandiflora (Cham. & Schlecht.) J.A. & J.H. Schultes | RIGR3 |
| largeflower wild coffee | Psychotria grandiflora Mann | PSGR |
| largeflower woodvine | Sabicea cinerea Aubl. | SACI2 |
| largeleaf bedstraw | Galium magnifolium (Dempster) Dempster | GAMA3 |
| lasianthus | Lasianthus Jack | LASIA2 |
| Lasianthus lanceolatus | Hoffmania lanceolata Griseb. [orthographic error] | HOLA6 |
| Lasianthus lanceolatus | Hoffmannia lanceolata Griseb. | HOLA7 |
| Lasianthus lanceolatus | Lasianthus moralesii (Griseb.) C. Wright | LAMO8 |
| leatherleaf wild coffee | Psychotria wawrae Sohmer | PSWA2 |
| Liberian coffee | Coffea liberica Bull ex Hiern. | COLI8 |
| licorice bedstraw | Galium circaezans Michx. | GACI2 |
| licorice bedstraw | Galium circaezans Michx. var. circaezans | GACIC |
| licorice bedstraw | Galium circaezans Michx. var. hypomalacum Fern. | GACIH |
| lilythorn | Catesbaea L. | CATES |
| limestone bedstraw | Galium proliferum Gray | GAPR |
| limestone swamp bedstraw | Galium brevipes Fern. & Wieg. | GABR6 |
| longleaf summer bluet | Houstonia longifolia Gaertn. | HOLO |
| luculia | Luculia Sweet | LUCUL |
| lucya | Lucya DC. | LUCYA |
| Lucya tetrandra | Clavenna tetrandra (L.) Standl. | CLTE7 |
| machaonia | Machaonia Humb. & Bonpl. | MACHA5 |
| madder | Rubia tinctoria L. | RUTI |
| makole | Coprosma granadensis (L. f.) Heads | COGR23 |
| Malheur bedstraw | Galium serpenticum Dempster ssp. malheurense Dempster & Ehrend. | GASEM |
| manono | Hedyotis hillebrandii (Fosberg) W.L. Wagner & Herbst | HEHI8 |
| maricao | Scolosanthus portoricensis Borhidi | SCPO9 |
| mata de Mariposa | Gonzalagunia hirsuta (Jacq.) K. Schum. | GOHI4 |
| mata de peo | Lasianthus lanceolatus (Griseb.) G. Maza | LALA5 |
| matted bluet | Houstonia humifusa (Gray) Gray | HOHU |
| Maui mirrorplant | Coprosma ochracea Oliver | COOC3 |
| Maui starviolet | Hedyotis formosa (Hbd.) Fosberg | HEFO3 |
| Maxwell's girdlepod | Mitracarpus maxwelliae Britt. & P. Wilson | MIMA6 |
| Mexican bedstraw | Galium mexicanum Kunth | GAME3 |
| Mexican bedstraw | Galium mexicanum Kunth ssp. asperrimum (Gray) Dempster | GAMEA |
| Mexican bedstraw | Galium mexicanum Kunth ssp. asperulum (Gray) Dempster | GAMEA2 |
| Mexican bedstraw | Galium mexicanum Kunth ssp. flexicum Dempster | GAMEF |
| Mexican bedstraw | Galium mexicanum Kunth ssp. mexicanum | GAMEM |
| Mexican buttonbush | Cephalanthus salicifolius Humb. & Bonpl. | CESA3 |
| Mexican clover | Richardia L. | RICHA |
| milk kelloggia | Kelloggia galioides Torr. | KEGA |
| milkberry | Chiococca P. Br. | CHIOC |
| milolii kopiwai | Psychotria hobdyi Sohmer | PSHO |
| mirrorplant | Coprosma J.R. & G. Forst. | COPRO |
| mitchella | Mitchella L. | MITCH |
| Mitracarpus hirtus | Mitracarpus villosus (Sw.) Cham. & Schlecht. ex DC. | MIVI3 |
| Mitracarpus hirtus | Spermacoce hirta L. | SPHI |
| Mitracarpus portoricensis | Mitracarpus frigidus (Willd. ex Roemer & J.A. Schultes) K. Schum. var. portoricensis Urban | MIFRP |
| Modoc bedstraw | Galium glabrescens (Ehrend.) Dempster & Ehrend. ssp. modocense Dempster & Ehrend. | GAGLM |
| Molokai mirrorplant | Coprosma ternata Oliver | COTE8 |
| morinda | Morinda L. | MORIN |
| Morinda trimera | Morinda sandwicensis O. Deg. | MOSA2 |
| Morinda umbellata | Morinda royoc hort. | MORO2 |
| mountain saucerflower | Crusea Cham. & Schlecht. | CRUSE |
| mountain saucerflower | Crusea diversifolia (Kunth) W.A. Anderson | CRDI12 |
| Muller's diamond-flowers | Stenaria mullerae (Fosberg) Terrell | STMU4 |
| Muller's starviolet | Stenaria mullerae (Fosberg) Terrell var. mullerae | STMUM |
| Munz's bedstraw | Galium munzii Hilend & Howell | GAMU3 |
| Munz's bedstraw | Galium munzii Hilend & Howell ssp. ambivalens Dempster & Ehrend. | GAMUA |
| Munz's bedstraw | Galium munzii Hilend & Howell ssp. munzii | GAMUM3 |
| Napali Beach starviolet | Hedyotis st.-johnii B.C. Stone & M.A. Lane | HEST2 |
| narrowleaf bedstraw | Galium angustifolium Nutt. ex Gray | GAAN2 |
| narrowleaf bedstraw | Galium angustifolium Nutt. ex Gray ssp. angustifolium | GAANA2 |
| narrowleaf bedstraw | Galium angustifolium Nutt. ex Gray ssp. foliosum (Hilend & Howell) Dempster & Stebbins | GAANF |
| narrowleaf bedstraw | Galium angustifolium Nutt. ex Gray ssp. nudicaule Dempster & Stebbins | GAANN |
| narrowleaf crucianella | Crucianella angustifolia L. | CRAN11 |
| needleleaf bluet | Houstonia acerosa (Gray) Gray ex Benth. & Hook. f. | HOAC |
| needleleaf bluet | Houstonia acerosa (Gray) Gray ex Benth. & Hook. f. var. acerosa | HOACA2 |
| neolamarckia | Neolamarckia F. Bosser | NEOLA2 |
| Neolamarckia cadamba | Anthocephalus cadamba (Roxb.) Miq. | ANCA23 |
| Neolamarckia cadamba | Anthocephalus chinensis (Lam.) A. Rich. ex Walp. | ANCH3 |
| neolaugeria | Neolaugeria Nicols. | NEOLA |
| Neolaugeria resinosa | Laugeria resinosa Vahl | LARE3 |
| Neolaugeria resinosa | Terebraria resinosa (Vahl) Sprague | TERE4 |
| Nevada bedstraw | Galium hypotrichium Gray ssp. nevadense Dempster & Ehrend. | GAHYN |
| New Mexico starviolet | Hedyotis vegrandis W.H. Lewis | HEVE4 |
| nodding bluet | Houstonia subviscosa (C. Wright ex Gray) Gray | HOSU |
| nodding wild coffee | Psychotria deflexa DC. | PSDE |
| noni kuahiwi | Morinda trimera Hbd. | MOTR |
| northern bedstraw | Galium boreale L. | GABO2 |
| northern bog bedstraw | Galium labradoricum (Wieg.) Wieg. | GALA2 |
| Oahu gardenia | Gardenia mannii St. John & Kuykend. | GAMA6 |
| Oahu mirrorplant | Coprosma longifolia Gray | COLO4 |
| Oahu wild coffee | Psychotria hexandra Mann ssp. oahuensis O. Deg. & Fosberg | PSHEO |
| Oahu wild coffee | Psychotria hexandra Mann ssp. oahuensis O. Deg. & Fosberg var. hosakana Fosberg | PSHEH6 |
| Oahu wild coffee | Psychotria hexandra Mann ssp. oahuensis O. Deg. & Fosberg var. oahuensis | PSHEO2 |
| Oahu wild coffee | Psychotria hexandra Mann ssp. oahuensis O. Deg. & Fosberg var. rockii Fosberg | PSHER |
| Okanoga bedstraw | Galium serpenticum Dempster ssp. okanoganense Dempster & Ehrend. | GASEO |
| oldenlandia | Oldenlandia L. | OLDEN |
| Oldenlandia biflora | Hedyotis biflora (L.) Lam. [excluded] | HEBI8 |
| Oldenlandia boscii | Hedyotis boscii DC. | HEBO5 |
| Oldenlandia corymbosa | Hedyotis corymbosa (L.) Lam. | HECO15 |
| Oldenlandia herbacea | Hedyotis herbacea L. [excluded] | HEHE16 |
| Oldenlandia lancifolia | Hedyotis commutata J.A. & J.H. Schultes | HECO29 |
| Oldenlandia lancifolia | Hedyotis lancifolia Schumacher | HELA17 |
| Oldenlandia salzmannii | Hedyotis salzmannii (DC.) Steud. | HESA9 |
| Oldenlandia uniflora | Hedyotis fasciculata Bertol. | HEFA7 |
| Oldenlandia uniflora | Hedyotis uniflora (L.) Lam. | HEUN5 |
| Oldenlandia uniflora | Hedyotis uniflora (L.) Lam. var. fasciculata (Bertol.) W.H. Lewis | HEUNF |
| Oldenlandia uniflora | Oldenlandia fasciculata (Bertol.) Small | OLFA |
| Oldenlandiopsis callitrichoides | Hedyotis callitrichoides (Griseb.) W.H. Lewis | HECA20 |
| Oldenlandiopsis callitrichoides | Oldenlandia callitrichoides Griseb. | OLCA |
| one-nerved ernodea | Ernodea cokeri Britt. ex Coker | ERCO44 |
| oneflower bedstraw | Galium uniflorum Michx. | GAUN2 |
| Onyx Peak bedstraw | Galium angustifolium Nutt. ex Gray ssp. onycense (Dempster) Dempster & Stebbins | GAANO |
| Oregon bedstraw | Galium oreganum Britt. | GAOR |
| Oriental asperula | Asperula orientalis Boiss. & Hohen. | ASOR6 |
| Ouachita bluet | Houstonia ouachitana (E.B. Sm.) Terrell | HOOU |
| oval-leaf false buttonweed | Spermacoce latifolia Aubl. | SPLA11 |
| Pacific false buttonweed | Spermacoce exilis (L.O. Williams) C. Adams | SPEX |
| Paederia foetida | Paederia scandans (Lour.) Merr. [orthographic variant] | PASC15 |
| Paederia foetida | Paederia scandens (Lour.) Merr. | PASC21 |
| Palicourea alpina | Psychotria alpina Sw. | PSAL |
| Palicourea crocea | Palicourea brevithyrsa Britt. & Standl. | PABR6 |
| Palicourea crocea | Psychotria crocea Sw. | PSCR |
| Palicourea croceoides | Palicourea crocea (Sw.) J.A. Schultes var. riparia (Benth.) Griseb. | PACRR |
| Palicourea croceoides | Palicourea riparia Benth. | PARI7 |
| Palicourea guianensis ssp. barbinervia | Palicourea barbinervia DC. | PABA9 |
| palo de cachimbo | Psychotria brachiata Sw. | PSBR2 |
| palo de hierro | Ixora ferrea (Jacq.) Benth. | IXFE |
| palo iloron | Antirhea lucida (Sw.) Hook. f. | ANLU3 |
| Panamint Mountains bedstraw | Galium hilendiae Dempster & Ehrend. ssp. carneum (Hilend & Howell) Dempster & Ehrend. | GAHIC |
| Parish's bedstraw | Galium parishii Hilend & Howell | GAPA4 |
| partridgeberry | Mitchella repens L. | MIRE |
| pegwood | Antirhea coriacea (Vahl) Urban | ANCO3 |
| pentanisia | Pentanisia Harv. | PENTA11 |
| pentas | Pentas Benth. | PENTA7 |
| pentodon | Pentodon Hochst. | PENTO |
| Pentodon pentandrer | Hedyotis halei Torr. & Gray | HEHA4 |
| Pentodon pentandrer | Hedyotis pentandra K. Schum. | HEPE5 |
| Pentodon pentandrer | Pentodon halei (Torr. & Gray) Gray | PEHA15 |
| Pentodon pentandrer | Pentodon pentandrus (K. Schum.) Vatke [orthographic error] | PEPE14 |
| phialanthus | Phialanthus Griseb. | PHIAL |
| phloxleaf bedstraw | Galium andrewsii Gray | GAAN |
| phloxleaf bedstraw | Galium andrewsii Gray ssp. intermedium Dempster & Stebbins | GAANI |
| piedmont bedstraw | Cruciata pedemontana (Bellardi) Ehrend. | CRPE10 |
| pilo | Hedyotis mannii Fosberg | HEMA8 |
| pinckneya | Pinckneya Michx. | PINCK |
| Pinckneya bracteata | Pinckneya pubens Michx. | PIPU3 |
| pineland false buttonweed | Spermacoce tetraquetra A. Rich. | SPTE6 |
| pineland milkberry | Chiococca parvifolia Wullschl. ex Griseb. | CHPA17 |
| placa chiquitu | Antirhea acutata (DC.) Urban | ANAC4 |
| plateado | Exostema ellipticum Griseb. | EXEL |
| Poole's starviolet | Stenaria mullerae (Fosberg) Terrell var. pooleana (B.L. Turner) Terrell | STMUP |
| poorjoe | Diodia teres Walt. | DITE2 |
| poorjoe | Diodia teres Walt. var. angustata Gray | DITEA |
| poorjoe | Diodia teres Walt. var. hirsutior Fern. & Grisc. | DITEH2 |
| poorjoe | Diodia teres Walt. var. hystricina Fern. & Grisc. | DITEH |
| poorjoe | Diodia teres Walt. var. oblongifolia Fern. | DITEO |
| poorjoe | Diodia teres Walt. var. teres | DITET |
| prairie Mexican clover | Richardia tricocca (Torr. & Gray) Standl. | RITR2 |
| pride of Big Pine | Strumpfia maritima Jacq. | STMA4 |
| prostrate false buttonweed | Spermacoce prostrata Aubl. | SPPR4 |
| psychotria | Psychotria garberiana Christophersen | PSGA |
| Psychotria deflexa | Psychotria patens auct. non Sw. [misapplied] | PSPA2 |
| Psychotria domingensis | Palicourea domingensis (Jacq.) DC. | PADO2 |
| Psychotria greenwelliae | Psychotria psychotrioides (Heller) Fosberg | PSPS2 |
| Psychotria guadalupensis ssp. grosourdyana | Psychotria grosourdyana (Baill.) Urban | PSGR4 |
| Psychotria hathewayi var. hathewayi | Psychotria waianensis Fosberg | PSWA |
| Psychotria hawaiiensis var. scoriacea | Psychotria hawaiiensis (Gray) Fosberg var. glomerata (Rock) Fosberg | PSHAG2 |
| Psychotria hexandra ssp. oahuensis var. rockii | Psychotria hexandra Mann var. st.-johnii Fosberg | PSHES2 |
| Psychotria hoffmannseggiana var. tribracteata | Psychotria involucrata A. Rich. | PSIN2 |
| Psychotria insularum | Psychotria insularum Gray var. paradisi Fosberg [excluded] | PSINP2 |
| Psychotria kaduana | Psychotria kaduana (Cham. & Schlecht.) Fosberg var. longissima (Rock) Fosberg | PSKAL |
| Psychotria kaduana | Psychotria kaduana (Cham. & Schlecht.) Fosberg var. pubiflora (Heller) Fosberg | PSKAP |
| Psychotria kaduana | Psychotria leptocarpa (Hbd.) Fosberg | PSLE3 |
| Psychotria kaduana | Psychotria longissima (Rock) St. John | PSLO4 |
| Psychotria ligustrifolia | Myrstiphyllum ligustrifolium Northrop | MYLI2 |
| Psychotria ligustrifolia | Psychotria bahamensis Millsp. | PSBA4 |
| Psychotria mariniana | Psychotria hawaiiensis (Gray) Fosberg var. glabrithyrsa Fosberg | PSHAG |
| Psychotria mauiensis | Psychotria hawaiiensis (Gray) Fosberg var. molokaiensis (Rock) Fosberg | PSHAM |
| Psychotria mauiensis | Psychotria hawaiiensis (Gray) Fosberg var. rotundifolia (Skottsberg) Fosberg | PSHAR |
| Psychotria mauiensis | Psychotria mauiensis Fosberg var. subcordata (Rock) St. John | PSMAS |
| Psychotria microdon | Psychotria pinularis Sess? & Moc. | PSPI3 |
| Psychotria microdon | Rondeletia microdon DC. | ROMI7 |
| Psychotria nervosa | Psychotria lanceolata Nutt. | PSLA4 |
| Psychotria nervosa | Psychotria nervosa Sw. var. lanceolata (Nutt.) Sarg. | PSNEL |
| Psychotria nervosa | Psychotria portoricensis DC. | PSPO4 |
| Psychotria nervosa | Psychotria undata Jacq. | PSUN2 |
| Psychotria tenuifolia | Psychotria sulzneri Small | PSSU2 |
| Psydrax odorata | Canthium odoratum (G. Forst.) Seem. | CAOD2 |
| Psydrax odorata | Canthium odoratum Seem. var. tinianense (Kaneh.) Fosberg | CAODT |
| pubescent mirrorplant | Coprosma pubens Gray | COPU8 |
| Puerto Rico alfilerillo | Machaonia portoricensis Baill. | MAPO6 |
| Puerto Rico devilbrush | Scolosanthus versicolor Vahl | SCVE4 |
| Puerto Rico girdlepod | Mitracarpus portoricensis (Urban) Urban | MIPO4 |
| Puerto Rico indigoberry | Randia portoricensis (Urban) Britt. & Standl. | RAPO2 |
| Puerto Rico quina | Antirhea portoricensis (Britt. & P. Wilson) Standl. | ANPO3 |
| puntaj jayuya | Chione seminervis Urban & Ekman | CHSE5 |
| purple bedstraw | Galium latifolium Michx. | GALA4 |
| pygmy bluet | Houstonia wrightii Gray | HOWR |
| quina | Antirhea Comm. ex Juss. | ANTIR |
| quina roja | Antirhea obtusifolia Urban | ANOB2 |
| quinine | Cinchona calisaya Wedd. | CICA17 |
| quinine | Cinchona officinalis L. | CIOF |
| quinine | Cinchona pubescens Vahl | CIPU |
| Randia aculeata | Randia aculeata L. var. mitis (L.) Griseb. | RAACM2 |
| Randia aculeata | Randia mitis L. | RAMI4 |
| Randia formosa | Mussaenda formosa Jacq. | MUFO2 |
| red bluet | Houstonia rubra Cav. | HORU |
| red cappel | Palicourea crocea (Sw.) J.A. Schultes | PACR3 |
| redgal | Morinda umbellata L. | MOUM |
| Remy's gardenia | Gardenia remyi Mann | GARE |
| Richardia tricocca | Crusea tricocca (Torr. & Gray) Heller | CRTR9 |
| Richardia tricocca | Diodia tricocca Torr. & Gray | DITR7 |
| river false buttonweed | Spermacoce confusa Rendle | SPCO7 |
| robusta coffee | Coffea canephora Pierre ex Froehner | COCA39 |
| rockface starviolet | Hedyotis parvula (Gray) Fosberg | HEPA14 |
| rose bluet | Houstonia rosea (Raf.) Terrell | HORO |
| roseta | Guettarda pungens Urban | GUPU |
| rough bedstraw | Galium asprellum Michx. | GAAS2 |
| rough buttonweed | Diodia radula Cham. & Schlect. | DIRA6 |
| rough Mexican clover | Richardia scabra L. | RISC |
| roughfruit corn bedstraw | Galium tricornutum Dandy | GATR6 |
| roundleaf bluet | Houstonia procumbens (Walt. ex J.F. Gmel.) Standl. | HOPR |
| rubia | Rubia L. | RUBIA |
| Rubia tinctoria | Rubia tinctorum L. [orthographic variant] | RUTI2 |
| Sabicea villosa | Sabicea hirsuta Kunth | SAHI8 |
| Salzmann's mille graines | Oldenlandia salzmannii (DC.) Benth. & Hook. f. ex B.D. Jackson | OLSA |
| San Antoinio Canyon bedstraw | Galium angustifolium Nutt. ex Gray ssp. gabrielense (Munz & Johnston) Dempster & Stebbins | GAANG2 |
| San Gabriel bedstraw | Galium grande McClatchie | GAGR5 |
| San Jacinto bedstraw | Galium angustifolium Nutt. ex Gray ssp. jacinticum Dempster & Stebbins | GAANJ |
| San Miguel Island bedstraw | Galium californicum Hook. & Arn. ssp. miguelense (Greene) Dempster & Stebbins | GACAM2 |
| Santa Barbara bedstraw | Galium cliftonsmithii (Dempster) Dempster & Stebbins | GACL2 |
| Santa Catalina Island bedstraw | Galium catalinense Gray | GACA4 |
| Santa Catalina Island bedstraw | Galium catalinense Gray ssp. catalinense | GACAC2 |
| Santa Clemente Island bedstraw | Galium catalinense Gray ssp. acrispum Dempster | GACAA |
| Santa Lucia bedstraw | Galium clementis Eastw. | GACL |
| scarlet jungleflame | Ixora coccinea L. | IXCO |
| scarletbush | Hamelia patens Jacq. | HAPA3 |
| scented blacktorch | Erithalis odorifer Jacq. | EROD |
| schradera | Schradera Vahl | SCHRA2 |
| Schradera exotica | Schradera vahlii Steyermark | SCVA4 |
| Schradera exotica | Urceolaria exotica J.F. Gmel. | UREX |
| Schultes's bedstraw | Galium schultesii Vest | GASC2 |
| scolosanthus | Scolosanthus Vahl | SCOLO2 |
| Scolosanthus grandifolius | Scolosanthus multiflorus auct. non (Sw.) Krug & Urban [misapplied] | SCMU5 |
| Scolosanthus portoricensis | Scolosanthus densiflorus auct. non Urban [misapplied] | SCDE3 |
| Scotch mist | Galium sylvaticum L. | GASY |
| Scott Mountain bedstraw | Galium serpenticum Dempster ssp. scotticum Dempster & Ehrend. | GASES2 |
| seacliff starviolet | Hedyotis littoralis (Hbd.) Fosberg | HELI5 |
| seaside buttonweed | Diodia serrulata (Beauv.) G. Taylor | DISE10 |
| Seminole balsamo | Psychotria nervosa Sw. | PSNE |
| Sequoia bedstraw | Galium sparsiflorum W. Wight | GASP2 |
| Sequoia bedstraw | Galium sparsiflorum W. Wight ssp. glabrius Dempster & Stebbins | GASPG |
| Sequoia bedstraw | Galium sparsiflorum W. Wight ssp. sparsiflorum | GASPS |
| Serissa foetida | Serissa japonica (Thunb.) Thunb. | SEJA2 |
| serpentine bedstraw | Galium andrewsii Gray ssp. gatense (Dempster) Dempster & Stebbins | GAANG |
| sevenyear apple | Casasia clusiifolia (Jacq.) Urban | CACL3 |
| sewer vine | Paederia cruddasiana Prain | PACR15 |
| sewer vine | Paederia L. | PAEDE |
| sherardia | Sherardia L. | SHERA |
| shining bedstraw | Galium concinnum Torr. & Gray | GACO3 |
| shortleaf wild coffee | Psychotria tenuifolia Sw. | PSTE4 |
| showy cappel | Palicourea guianensis Aubl. | PAGU |
| showy cappel | Palicourea guianensis Aubl. ssp. barbinervia (DC.) Steyermark | PAGUB |
| shrubby bedstraw | Galium multiflorum Kellogg | GAMU2 |
| shrubby false buttonweed | Spermacoce verticillata L. | SPVE2 |
| Sintenis's quina | Antirhea sintenisii Urban | ANSI |
| Siskiyou bedstraw | Galium ambiguum W. Wight ssp. siskiyouense (Ferris) Dempster & Stebbins | GAAMS2 |
| slender bedstraw | Galium angustifolium Nutt. ex Gray ssp. gracillimum Dempster & Stebbins | GAANG3 |
| slender buttonweed | Diodia ocymifolia (Willd. ex Roemer & J.A. Schultes) Bremek. | DIOC4 |
| slender false buttonweed | Spermacoce tenuior L. | SPTE |
| smallflower indigoberry | Randia parvifolia Lam. | RAPA4 |
| smallflower lilythorn | Catesbaea parviflora Sw. | CAPA43 |
| smallflower starviolet | Stenaria rupicola (Greenm.) Terrell | STRU9 |
| smooth bedstraw | Cruciata laevipes Opiz | CRLA13 |
| smooth false buttonweed | Spermacoce glabra Michx. | SPGL2 |
| snowrose | Serissa Commerson ex A. Juss. | SERIS |
| snowrose | Serissa foetida (L. f.) Lam. | SEFO2 |
| South American Mexican clover | Richardia humistrata (Cham. & Schlecht.) J.A. & J.H. Schultes | RIHU3 |
| southern bluet | Houstonia micrantha (Shinners) Terrell | HOMI4 |
| southwestern bedstraw | Galium virgatum Nutt. | GAVI |
| Spermacoce alata | Borreria alata (Aubl.) DC. [excluded] | BOAL4 |
| Spermacoce assurgens | Borreria laevis auct. non (Lam.) Griseb. [misapplied] | BOLA4 |
| Spermacoce assurgens | Spermacoce suffrutescens Jacq. | SPSU5 |
| Spermacoce confusa | Spermacoce riparia auct. non Cham. & Schlecht. [misapplied] | SPRI2 |
| Spermacoce confusa | Spermacoce tenuior auct. non L. [misapplied] | SPTE9 |
| Spermacoce densiflora | Borreria densiflora DC. | BODE4 |
| Spermacoce exilis | Borreria repens auct. non DC. [misapplied] | BORE7 |
| Spermacoce exilis | Spermacoce mauritiana auct. non Gideon [misapplied] | SPMA7 |
| Spermacoce floridana | Spermacoce keyensis Small | SPKE |
| Spermacoce floridana | Spermacoce tenuior L. var. floridana (Urban) R.W. Long | SPTEF |
| Spermacoce prostrata | Borreria ocymoides auct. non (Burm. f.) DC. [misapplied] | BOOC |
| Spermacoce prostrata | Spermacoce ocymoides auct. non Burm. f. [misapplied] | SPOC3 |
| Spermacoce prostrata | Spermacoce repens auct. non (DC.) Sess? & Moc. [misapplied] | SPRE3 |
| Spermacoce sintenisii | Borreria brachysepala Urban | BOBR2 |
| Spermacoce sintenisii | Borreria laevis (Lam.) Griseb. var. sintenisii Urban | BOLAS |
| Spermacoce tenella | Borreria capitata (Ruiz & Pav?n) DC. var. tenella (Kunth) Steyermark [excluded] | BOCAT2 |
| Spermacoce tenella | Borreria tenella (Kunth) Cham. & Schlecht. [excluded] | BOTE12 |
| Spermacoce tenuior | Spermacoce riparia Cham. & Schlecht. | SPRI3 |
| Spermacoce terminalis | Borreria terminalis Small | BOTE6 |
| Spermacoce verticillata | Borreria verticillata (L.) G.F.W. Mey. | BOVE |
| spreading bedstraw | Galium humifusum Bieb. | GAHU3 |
| starry bedstraw | Galium stellatum Kellogg | GAST |
| starry bedstraw | Galium stellatum Kellogg ssp. eremicum (Hilend & Howell) Ehrend. | GASTE2 |
| starviolet | Hedyotis L. | HEDYO2 |
| Stenaria butterwickiae | Hedyotis butterwickiae (Terrell) Nesom | HEBU2 |
| Stenaria butterwickiae | Houstonia butterwickiae Terrell | HOBU2 |
| Stenaria mullerae var. mullerae | Hedyotis mullerae Fosberg | HEMU6 |
| Stenaria mullerae var. mullerae | Houstonia mullerae (Fosberg) Terrell | HOMU2 |
| Stenaria mullerae var. pooleana | Hedyotis pooleana B.L. Turner | HEPO11 |
| Stenaria nigricans var. floridana | Hedyotis nigricans (Lam.) Fosberg var. floridana (Standl.) Wunderlin | HENIF |
| Stenaria nigricans var. floridana | Hedyotis purpurea (L.) Torr. & Gray var. floridana (Standl.) Fosberg | HEPUF |
| Stenaria nigricans var. floridana | Houstonia floridana Standl. | HOFL |
| Stenaria nigricans var. floridana | Houstonia nigricans (Lam.) Fern. var. floridana (Standl.) Terrell | HONIF |
| Stenaria nigricans var. nigricans | Chamisme angustifolia (Michx.) Nieuwl. | CHAN6 |
| Stenaria nigricans var. nigricans | Gentiana nigricans Lam. | GENI2 |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg | HENI4 |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. austrotexana B.L. Turner | HENIA2 |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. filifolia (Chapman) Shinners | HENIF2 |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. nigricans (Lam.) Fosberg [superfluous autonym] | HENIN |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. papillacea B.L. Turner | HENIP3 |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. pulvinata (Small) Fosberg | HENIP |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. rigidiuscula (Gray) Shinners | HENIR |
| Stenaria nigricans var. nigricans | Hedyotis nigricans (Lam.) Fosberg var. scabra (S. Wats.) Fosberg | HENIS |
| Stenaria nigricans var. nigricans | Hedyotis salina (Heller) Shinners | HESA7 |
| Stenaria nigricans var. nigricans | Houstonia angustifolia Michx. | HOAN2 |
| Stenaria nigricans var. nigricans | Houstonia angustifolia Michx. var. filifolia (Chapman) Gray | HOANF |
| Stenaria nigricans var. nigricans | Houstonia angustifolia Michx. var. rigidiuscula Gray | HOANR |
| Stenaria nigricans var. nigricans | Houstonia filifolia (Chapman) Small | HOFI3 |
| Stenaria nigricans var. nigricans | Houstonia nigricans (Lam.) Fern. | HONI |
| Stenaria nigricans var. nigricans | Houstonia nigricans (Lam.) Fern. var. pulvinata (Small) Terrell | HONIP |
| Stenaria nigricans var. nigricans | Houstonia pulvinata Small | HOPU6 |
| Stenaria nigricans var. nigricans | Houstonia rigidiuscula (Gray) Woot. & Standl. | HORI2 |
| Stenaria nigricans var. nigricans | Houstonia salina Heller | HOSA3 |
| Stenaria nigricans var. nigricans | Houstonia tenuis Small | HOTE6 |
| Stenaria nigricans var. nigricans | Oldenlandia angustifolia (Michx.) Gray | OLAN |
| Stenaria nigricans var. nigricans | Oldenlandia angustifolia (Michx.) Gray var. filifolia Chapman | OLANF |
| Stenaria rupicola | Hedyotis angulata Fosberg ex Shinners | HEAN14 |
| Stenaria rupicola | Hedyotis nigricans (Lam.) Fosberg var. angulata (Fosberg ex Shinners) W.H. Lewis | HENIA |
| Stenaria rupicola | Hedyotis nigricans (Lam.) Fosberg var. parviflora (Gray) W.H. Lewis | HENIP2 |
| Stenaria rupicola | Hedyotis stenophylla Torr. & Gray var. parviflora Gray | HESTP |
| Stenaria rupicola | Houstonia rupicola Greenm. | HORU2 |
| stickywilly | Galium aparine L. | GAAP2 |
| stiff buttonweed | Diodia apiculata (Willd. ex Roemer & J.A. Schultes) K. Schum. | DIAP |
| stiff marsh bedstraw | Galium tinctorium (L.) Scop. | GATI |
| stinkvine | Paederia foetida L. | PAFO3 |
| strumpfia | Strumpfia Jacq. | STRUM |
| subalpine bedstraw | Galium hypotrichium Gray ssp. subalpinum (Hilend & Howell) Ehrend. | GAHYS |
| sweetscented bedstraw | Galium odoratum (L.) Scop. | GAOD3 |
| tafetan | Palicourea alpina (Sw.) DC. | PAAL9 |
| Tahitian gardenia | Gardenia taitensis DC. | GATA |
| tangled starviolet | Hedyotis intricata Fosberg | HEIN7 |
| Texas bedstraw | Galium texense Gray | GATE3 |
| thicket wild coffee | Psychotria microdon (DC.) Urban | PSMI |
| threepetal bedstraw | Galium trifidum L. | GATR2 |
| threepetal bedstraw | Galium trifidum L. ssp. columbianum (Rydb.) Hult | GATRC |
| threepetal bedstraw | Galium trifidum L. ssp. halophilum (Fern. & Wieg.) Puff | GATRH2 |
| threepetal bedstraw | Galium trifidum L. ssp. subbiflorum (Wieg.) Piper | GATRS2 |
| threepetal bedstraw | Galium trifidum L. ssp. trifidum | GATRT5 |
| Thunberg's gardenia | Gardenia thunbergia L. f. | GATH |
| thymeleaf bluet | Houstonia serpyllifolia Michx. | HOSE2 |
| tibey trepador | Hillia parasitica Jacq. | HIPA4 |
| tiny bluet | Houstonia pusilla Schoepf | HOPU3 |
| torch tree | Ixora pavetta Andrews | IXPA |
| tres cabezas | Psychotria uliginosa Sw. | PSUL |
| tropical buttonweed | Diodia sarmentosa Sw. | DISA8 |
| tropical girdlepod | Mitracarpus hirtus (L.) DC. | MIHI2 |
| tropical lilythorn | Catesbaea melanocarpa Krug & Urban | CAME19 |
| tropical Mexican clover | Richardia brasiliensis Gomes | RIBR2 |
| twinleaf bedstraw | Galium bifolium S. Wats. | GABI |
| uncaria | Uncaria Schreber | UNCAR |
| vangueria | Vangueria Comm. ex Juss. | VANGU |
| Vangueria madagascariensis | Vangueria edulis (Vahl) Vahl | VAED2 |
| variable starviolet | Hedyotis terminalis (Hook. & Arn.) W.L. Wagner & Herbst | HETE21 |
| Venus's pride | Houstonia purpurea L. | HOPU2 |
| Venus's pride | Houstonia purpurea L. var. calycosa Gray | HOPUC |
| Venus's pride | Houstonia purpurea L. var. montana (Small) Terrell | HOPUM |
| Venus's pride | Houstonia purpurea L. var. purpurea | HOPUP3 |
| Virginia buttonweed | Diodia virginiana L. | DIVI3 |
| Virginia buttonweed | Diodia virginiana L. var. attenuata Fern. | DIVIA |
| Virginia buttonweed | Diodia virginiana L. var. latifolia Torr. & Gray | DIVIL |
| Virginia buttonweed | Diodia virginiana L. var. virginiana | DIVIV2 |
| voa vanga | Vangueria madagascariensis J.F. Gmel. | VAMA5 |
| Waianae Range starviolet | Hedyotis degeneri Fosberg | HEDE3 |
| Waianae Range starviolet | Hedyotis degeneri Fosberg var. coprosmifolia Fosberg | HEDEC |
| Waianae Range starviolet | Hedyotis degeneri Fosberg var. degeneri | HEDED2 |
| Waianae Range wild coffee | Psychotria hathewayi Fosberg | PSHA2 |
| Waianae Range wild coffee | Psychotria hathewayi Fosberg var. brevipetiolata Fosberg | PSHAB |
| Waianae Range wild coffee | Psychotria hathewayi Fosberg var. hathewayi | PSHAH2 |
| wall bedstraw | Galium parisiense L. | GAPA5 |
| Warner Mountains bedstraw | Galium serpenticum Dempster ssp. warnerense Dempster & Ehrend. | GASEW |
| warty bedstraw | Galium verrucosum Huds. | GAVE5 |
| Watson's bedstraw | Galium watsonii (Gray) Heller | GAWA |
| waxy bedstraw | Galium glaucum L. | GAGL3 |
| West Indian false buttonweed | Spermacoce sintenisii (Urban) Alain | SPSI4 |
| West Indian milkberry | Chiococca alba (L.) A.S. Hitchc. | CHAL8 |
| white bedstraw | Galium album P. Mill. | GAAL |
| white girdlepod | Mitracarpus breviflorus Gray | MIBR7 |
| white indigoberry | Randia aculeata L. | RAAC |
| white jungleflame | Ixora thwaitesii Hook. f. | IXTH |
| whorled-leaf false buttonweed | Spermacoce eryngioides (Cham. & Schlecht.) Kuntze | SPER4 |
| wild coffee | Psychotria L. | PSYCH |
| wild guave | Guettarda scabra (L.) Vent. | GUSC |
| winged false buttonweed | Spermacoce alata Aubl. [excluded] | SPAL3 |
| Wirtgen's bedstraw | Galium verum L. var. wirtgenii (F.W. Schultz) Oborny | GAVEW2 |
| woodland false buttonweed | Spermacoce assurgens Ruiz & Pav?n | SPAS2 |
| woodland mirrorplant | Coprosma rhynchocarpa Gray | CORH |
| woodland wild coffee | Psychotria hexandra Mann | PSHE2 |
| woodland wild coffee | Psychotria hexandra Mann ssp. hexandra | PSHEH3 |
| woodland wild coffee | Psychotria hexandra Mann ssp. hexandra var. hexandra | PSHEH4 |
| woodland wild coffee | Psychotria hexandra Mann ssp. hexandra var. hirta Wawra | PSHEH5 |
| woodland wild coffee | Psychotria hexandra Mann ssp. hexandra var. kealiae Fosberg | PSHEK2 |
| woodruff | Asperula L. | ASPER2 |
| woodvine | Sabicea Aubl. | SABIC |
| woolly woodvine | Sabicea villosa Willd. ex Roemer & J.A. Schultes | SAVI6 |
| Wright's bedstraw | Galium wrightii Gray | GAWR2 |
| Yellow Spring bedstraw | Galium verum L. | GAVE |
| Yellow Spring bedstraw | Galium verum L. var. verum | GAVEV |
| yellow wall bedstraw | Galium murale (L.) All. | GAMU4 |
| yellow-cedar | Palicourea croceoides Ham. | PACR18 |
| yellowshrub | Schradera exotica (J.F. Gmel.) Standl. | SCEX2 |
| yerba de guava | Coccocypselum herbaceum Aubl. | COHE6 |
| Yolla Bolly bedstraw | Galium ambiguum W. Wight | GAAM2 |
| Yolla Bolly bedstraw | Galium ambiguum W. Wight ssp. ambiguum | GAAMA |
| Yunnan luculia | Luculia intermedia Hutchinson | LUIN6 |