| Common Name | Scientific Name | Code |
| Alisma gramineum | Alisma geyeri Torr. | ALGE3 |
| Alisma gramineum | Alisma gramineum Lej. var. angustissimum (DC.) Hendricks | ALGRA |
| Alisma gramineum | Alisma gramineum Lej. var. geyeri (Torr.) Lam. | ALGRG2 |
| Alisma gramineum | Alisma gramineum Lej. var. graminifolium (Wahlenb.) Hendricks | ALGRG3 |
| Alisma gramineum | Alisma gramineum Lej. var. wahlenbergii auct. non (Holmb.) Raymond & Kucyniak [misapplied] | ALGRW |
| Alisma gramineum | Alisma lanceolatum Gray | ALLA5 |
| Alisma subcordatum | Alisma plantago-aquatica L. ssp. subcordatum (Raf.) Hult | ALPLS |
| Alisma subcordatum | Alisma plantago-aquatica L. var. parviflorum (Pursh) Torr. | ALPLP |
| Alisma triviale | Alisma brevipes Greene | ALBR10 |
| Alisma triviale | Alisma plantago-aquatica L. ssp. brevipes (Greene) Samuelsson | ALPLB |
| Alisma triviale | Alisma plantago-aquatica L. var. americanum J.A. Schultes | ALPLA |
| Alisma triviale | Alisma plantago-aquatica L. var. brevipes (Greene) Victorin | ALPLB2 |
| American water plantain | Alisma subcordatum Raf. | ALSU |
| arrowhead | Sagittaria L. | SAGIT |
| arumleaf arrowhead | Sagittaria cuneata Sheldon | SACU |
| awl-leaf arrowhead | Sagittaria subulata (L.) Buch. | SASU |
| Baldellia ranunculoides | Alisma ranunculoides L. | ALRA2 |
| Baldellia ranunculoides | Echinodorus ranunculoides (L.) Engelm. | ECRA |
| Bolivian burrhead | Echinodorus bolivianus (Rusby) Holm-Niesen | ECBO4 |
| broadleaf arrowhead | Sagittaria latifolia Willd. | SALA2 |
| bulltongue arrowhead | Sagittaria lancifolia L. | SALA |
| bulltongue arrowhead | Sagittaria lancifolia L. ssp. lancifolia | SALAL7 |
| bulltongue arrowhead | Sagittaria lancifolia L. ssp. media (Micheli) Bogin | SALAM2 |
| bunched arrowhead | Sagittaria fasciculata E.O. Beal | SAFA5 |
| burrhead | Echinodorus L.C. Rich. ex Engelm. | ECHIN6 |
| California damsonium | Damasonium californicum Torr. ex Benth. | DACA12 |
| Chapman's arrowhead | Sagittaria graminea Michx. var. chapmanii J.G. Sm. | SAGRC2 |
| Chihuahuan arrowhead | Sagittaria demersa J.G. Sm. | SADE11 |
| creeping burrhead | Echinodorus cordifolius (L.) Griseb. | ECCO3 |
| crested arrowhead | Sagittaria cristata Engelm. | SACR4 |
| damasonium | Damasonium Hill | DAMAS |
| Damasonium californicum | Machaerocarpus californicus (Torr. ex Benth.) Small | MACA3 |
| delta arrowhead | Sagittaria platyphylla (Engelm.) J.G. Sm. | SAPL |
| Echinodorus berteroi | Echinodorus berteroi (Spreng.) Fassett var. lanceolatus (Engelm. ex S. Wats. & Coult.) Fassett | ECBEL |
| Echinodorus berteroi | Echinodorus rostratus (Nutt.) Engelm. ex Gray | ECRO |
| Echinodorus berteroi | Echinodorus rostratus (Nutt.) Engelm. ex Gray var. lanceolatus Engelm. ex S. Wats. & Coult. | ECROL |
| Echinodorus bolivianus | Alisma bolivianum Rusby | ALBO9 |
| Echinodorus cordifolius | Echinodorus radicans (Nutt.) Engelm. | ECRA2 |
| Echinodorus tenellus | Echinodorus parvulus Engelm. | ECPA6 |
| Echinodorus tenellus | Echinodorus tenellus (Mart.) Buch. var. latifolius (Seub.) Fassett | ECTEL |
| Echinodorus tenellus | Echinodorus tenellus (Mart.) Buch. var. parvulus (Engelm.) Fassett | ECTEP |
| Echinodorus tenellus | Helianthium parvulum (Engelm.) Britt. | HEPA21 |
| Echinodorus tenellus | Helianthium tenellum Britt. | HETE13 |
| Engelmann's arrowhead | Sagittaria engelmanniana J.G. Sm. | SAEN |
| European water plantain | Alisma plantago-aquatica L. | ALPL |
| Florida burrhead | Echinodorus floridanus Haynes & Burkhalter | ECFL4 |
| giant arrowhead | Sagittaria montevidensis Cham. & Schlecht. | SAMO |
| grassy arrowhead | Sagittaria graminea Michx. | SAGR |
| grassy arrowhead | Sagittaria graminea Michx. var. graminea | SAGRG |
| Guyanese arrowhead | Sagittaria guayanensis Kunth | SAGU |
| Hawaii arrowhead | Sagittaria sagittifolia L. [excluded] | SASA7 |
| hooded arrowhead | Sagittaria calycina Engelm. | SACA21 |
| hooded arrowhead | Sagittaria calycina Engelm. var. calycina | SACAC |
| hooded arrowhead | Sagittaria calycina Engelm. var. spongiosa Engelm. | SACAS |
| intermediate arrowhead | Sagittaria intermedia Micheli | SAIN10 |
| Kansas arrowhead | Sagittaria ambigua J.G. Sm. | SAAM4 |
| lanceleaf water plantain | Alisma lanceolatum Withering | ALLA2 |
| lesser waterplantain | Baldellia ranunculoides (L.) Parl. | BARA |
| Little River arrowhead | Sagittaria secundifolia Kral | SASE9 |
| longbarb arrowhead | Sagittaria longiloba Engelm. ex J.G. Sm. | SALO2 |
| longbeak arrowhead | Sagittaria australis (J.G. Sm.) Small | SAAU2 |
| mudbabies | Echinodorus tenellus (Mart.) Buch. | ECTE2 |
| narrowleaf water plantain | Alisma gramineum Lej. | ALGR |
| nipplebract arrowhead | Sagittaria papillosa Buch. | SAPA2 |
| northern water plantain | Alisma triviale Pursh | ALTR7 |
| quillwort arrowhead | Sagittaria isoetiformis J.G. Sm. | SAIS |
| Sagittaria australis | Sagittaria engelmanniana J.G. Sm. ssp. longirostra auct. non Micheli [misapplied] | SAENL2 |
| Sagittaria australis | Sagittaria longirostra (Micheli) J.G. Sm. var. australis J.G. Sm. | SALOA |
| Sagittaria australis | Sagittaria longirostra auct. non (Micheli) J.G. Sm. [misapplied] | SALO10 |
| Sagittaria brevirostra | Sagittaria engelmanniana J.G. Sm. ssp. brevirostra (Mackenzie & Bush) Bogin | SAENB2 |
| Sagittaria calycina var. calycina | Lophotocarpus californicus J.G. Sm. | LOCA11 |
| Sagittaria calycina var. calycina | Lophotocarpus calycinus (Engelm.) J.G. Sm. | LOCA12 |
| Sagittaria calycina var. calycina | Lophotocarpus depauperatus J.G. Sm. | LODE3 |
| Sagittaria calycina var. calycina | Sagittaria montevidensis Cham. & Schlecht. ssp. calycina (Engelm.) Bogin | SAMOC2 |
| Sagittaria calycina var. spongiosa | Lophotocarpus spathulatus J.G. Sm. | LOSP6 |
| Sagittaria calycina var. spongiosa | Lophotocarpus spongiosus (Engelm.) J.G. Sm. | LOSP5 |
| Sagittaria calycina var. spongiosa | Sagittaria montevidensis Cham. & Schlecht. ssp. spongiosa (Engelm.) Bogin | SAMOS2 |
| Sagittaria calycina var. spongiosa | Sagittaria montevidensis Cham. & Schlecht. var. spongiosa (Engelm.) Boivin | SAMOS3 |
| Sagittaria calycina var. spongiosa | Sagittaria spathulata (J.G. Sm.) Buch. | SASP10 |
| Sagittaria cristata | Sagittaria graminea Michx. var. cristata (Engelm.) Bogin | SAGRC4 |
| Sagittaria cuneata | Sagittaria arifolia Nutt. ex J.G. Sm. | SAAR26 |
| Sagittaria fasciculata | Sagittaria graminea Michx. var. macrocarpa (J.G. Sm.) Bogin | SAGRM |
| Sagittaria fasciculata | Sagittaria macrocarpa J.G. Sm. | SAMA22 |
| Sagittaria filiformis | Sagittaria stagnorum Small | SAST4 |
| Sagittaria filiformis | Sagittaria subulata (L.) Buch. var. gracillima (S. Wats.) J.G. Sm. | SASUG2 |
| Sagittaria graminea var. chapmanii | Sagittaria chapmanii (J.G. Sm.) C. Mohr | SACH14 |
| Sagittaria graminea var. chapmanii | Sagittaria graminea Michx. ssp. chapmanii (J.G. Sm.) Haynes & C.B. Hellquist | SAGRC5 |
| Sagittaria graminea var. graminea | Sagittaria cycloptera (J.G. Sm.) C. Mohr | SACY5 |
| Sagittaria graminea var. graminea | Sagittaria eatonii J.G. Sm. | SAEA3 |
| Sagittaria graminea var. weatherbiana | Sagittaria graminea Michx. ssp. weatherbiana (Fern.) Haynes & C.B. Hellquist | SAGRW2 |
| Sagittaria graminea var. weatherbiana | Sagittaria weatherbiana Fern. | SAWE2 |
| Sagittaria kurziana | Sagittaria subulata (L.) Buch. var. kurziana (Gl?ck) Bogin | SASUK |
| Sagittaria lancifolia ssp. lancifolia | Sagittaria angustifolia Lindl. | SAAN10 |
| Sagittaria lancifolia ssp. media | Sagittaria falcata Pursh | SAFA4 |
| Sagittaria lancifolia ssp. media | Sagittaria lancifolia L. var. media Micheli | SALAM3 |
| Sagittaria latifolia | Sagittaria chinensis Pursh | SACH15 |
| Sagittaria latifolia | Sagittaria engelmanniana J.G. Sm. ssp. longirostra (Micheli) Bogin | SAENL3 |
| Sagittaria latifolia | Sagittaria esculenta T.J. Howell | SAES2 |
| Sagittaria latifolia | Sagittaria latifolia Willd. var. obtusa (Engelm.) Wieg. | SALAO |
| Sagittaria latifolia | Sagittaria latifolia Willd. var. pubescens (Muhl. ex Nutt.) J.G. Sm. | SALAP |
| Sagittaria latifolia | Sagittaria longirostra (Micheli) J.G. Sm. | SALO11 |
| Sagittaria latifolia | Sagittaria obtusa Muhl. ex Willd., non Thunb. | SAOB4 |
| Sagittaria latifolia | Sagittaria ornithorhyncha Small | SAOR8 |
| Sagittaria latifolia | Sagittaria planipes Fern. | SAPL5 |
| Sagittaria latifolia | Sagittaria pubescens Muhl. ex Nutt. | SAPU10 |
| Sagittaria latifolia | Sagittaria variabilis Engelm. var. obtusa Engelm. | SAVAO2 |
| Sagittaria latifolia | Sagittaria viscosa C. Mohr | SAVI12 |
| Sagittaria longiloba | Sagittaria greggii J.G. Sm. | SAGR2 |
| Sagittaria platyphylla | Sagittaria graminea Michx. var. platyphylla Engelm. | SAGRP2 |
| Sagittaria platyphylla | Sagittaria mohrii J.G. Sm. | SAMO9 |
| Sagittaria subulata | Sagittaria lorata (Chapman) Small | SALO12 |
| Sagittaria subulata | Sagittaria subulata (L.) Buch. var. natans (Michx.) J.G. Sm. | SASUN |
| Sagittaria subulata | Sagittaria subulata (L.) Buch. var. subulata (L.) Buch. [superfluous autonym] | SASUS |
| Sagittaria teres | Sagittaria graminea Michx. var. teres (S. Wats.) Bogin | SAGRT |
| sessilefruit arrowhead | Sagittaria rigida Pursh | SARI |
| shortbeak arrowhead | Sagittaria brevirostra Mackenzie & Bush | SABR8 |
| slender arrowhead | Sagittaria teres S. Wats. | SATE2 |
| springtape | Sagittaria kurziana Gl?ck | SAKU |
| threadleaf arrowhead | Sagittaria filiformis J.G. Sm. | SAFI2 |
| threeleaf arrowhead | Sagittaria trifolia L. | SATR11 |
| upright burrhead | Echinodorus berteroi (Spreng.) Fassett | ECBE2 |
| valley arrowhead | Sagittaria sanfordii Greene | SASA2 |
| water plantain | Alisma L. | ALISM |
| waterplantain | Baldellia Parl. | BALDE |
| Weatherby's arrowhead | Sagittaria graminea Michx. var. weatherbiana (Fern.) Bogin | SAGRW |