| Alisma subcordatum Raf. | |
| Alopecurus aequalis Sobol. | Shortawn foxtail |
| Alopercurus geniculatus L. | Marsh or Water foxtail |
| Ammannia auriculata Willd. | |
Ammannia coccinea Rothb. | Ammania |
| Anemopsis californica (Nutt.) Hook. & Arn. | Yerba mansa |
Asclepias incarnata L. | Swamp milkweed |
| Azolla mexicana Schlecht. & Cham. ex K. Presl | Water fern or Mosquito fern |
Bacopa rotundifolia (Michx.) Wettst. | |
| Barbarea orthoceras Ledeb. | Wintercress |
Beckmannia syzigachne (Steud.) Fern. | American sloughgrass |
| Bergia texana (Hook.) Seub. ex Walp. | Bergia |
Berula erecta (Huds.) Coville | Cutleaf water parsnip |
| Bidens bigelovii Gray | |
Bidens cernua L. | Bur marigold |
| Bidens laevis (L.) B.S.P. | |
Boehmeria cylindrica (L.) Sw. | |
| Calamagrostis canadensis (Michx.) Beauv. | Bluejoint reedgrass |
Callitriche hermaphroditica L. | Secret water-starwort |
| Callitriche heterophylla Pursh | Larger water-starwort |
Callitriche palustris L. | Vernal water-starwort |
| Cardamine cordifolia Gray | Heartleaf bittercress |
Carex aquatilis Wahlenb. | Water sedge |
| Carex atherodes Spreng | Awned sedge |
Carex aurea Nutt. | Golden sedge |
| Carex canescens L. | Pale sedge |
Carex disperma | Dewey Softleaf sedge |
| Carex emoryi Dewey | |
Carex frankii Kunth | |
Carex hystericina Muhl. ex Willd. | Bottle brush sedge, porcupine sedge |
| Carex interior Bailey | Inland sedge |
Carex leptalea Wahlenb. | Flaccid sedge |
| Carex nebrascensis Dewey | Nebraska sedge |
Carex senta Boott | |
Carex simulata Mackenzie | Lookalike sedge |
| Carex stipata Muhl. ex Willd. | Prickly sedge |
Carex vesicaria L. | Blister sedge |
| Carex viridula Michx. | Green sedge |
Carex vulpinoidea Michx | Fox sedge |
Castilleja exilis A. Nels. | Annual paintbrush |
| Castilleja minor (Gray) Gray | |
Catabrosa aquatica (L.) Beauv. | Bookgrass |
| Ceratophyllum demersum L. | Common hornwort |
Cicuta maculata L. | Water hemlock |
Cirsium vinaceum Woot. & Standl. | |
| Cladium mariscus ssp.jamaicense (Crantz) KŸkenth. | Sawgrass |
Conium maculatum L. | Poison hemlock |
| Cyperus acuminatus Torr. & Hook. ex Torr. | Acuminate flatsedge |
Cyperus difformis L. | Redfoot flatsedge |
| Cyperus erythrorhizos Muhl | |
Cyperus squarrosus L. | |
| Dodecatheon alpinum (Gray) Greene | Alpine shooting star |
Echinochloa crus-pavonis | |
| (Kunth) J.A. Schultes | Barnyard grass |
Egeria densa Planch. | |
| Elatine triandra Schkuhr | Three-lobed waterwort |
Eleocharis acicularis (L.) Roemer & J.A. Schultes | Slender spikerush |
| Eleocharis montana (Kunth) Roemer & J.A. Schultes | |
Eleocharis palustris (L.) Roemer & J.A. Schultes | Common spikerush |
| Eleocharis parvula | |
(Roemer & J.A. Schultes) Link ex Bluff, Nees & Schauer | Dwarf spikerush |
| Eleocharis quinqueflora (F.X. Hartmann) Schwarz | Few flower spikerush |
Eleocharis rostellata (Torr.) Torr. | Torrey's spikerush |
| Elodea bifoliata St. John | |
Elodea canadensis Michx | Elodea |
| Elodea nuttallii (Planch.) Caspary | |
Epilobium leptophyllum Raf. | Slender willowherb |
| Epipactis gigantea Dougl. ex Hook. | Helleborine |
Eriophorum angustifolium Honckeny | |
| Eryngium sparganophyllum Hemsl. | |
Eupatorium maculatum var. maculatum L | Joe-Pye weed |
| Eustoma exaltatum (L.) Salisb. ex G. Don | |
Fuirena simplex Vahl | |
| Gaura neomexicana Woot. | |
Gentiana fremontii Torr. | |
| Gentianopsis thermalis (Kuntze) Iltis | |
Glyceria borealis (Nash) Batchelder | Northern managrass |
| Glyceria elata (Nash ex Rydb.) M.E. Jones | Tall managrass |
Glyceria grandis S. Wats. | American managrass |
| Glyceria striata (Lam.) A.S. Hitchc. | Fowl managrass |
Gratiola neglecta Torr. | Common hedge-hyssop |
| Heracleum maximum Bartr. | |
Heteranthera limosa (Sw.) Willd. | |
| Hibiscus moscheutos L. | Common rose-mallow |
Hydrocotyle verticillata Thunb. | Water pennywort |
| Isoetes bolanderi Engelm. | Bolanders quillwort |
Juncus acuminatus Michx. | |
| Juncus albescens (Lange) Fern. | |
Juncus articulatus L | Jointed rushgrass |
| Juncus balticus Willd. | Wire grass |
Juncus bufonius L. | Toad rush |
| Juncus castaneus Sm. | Chestnut rush |
Juncus dichotomus Ell. | |
| Juncus effusus L. | |
Juncus filiformis L. | Filiform rush |
| Juncus mertensianus Bong. | Merten's rush |
Juncus nodosus L. | Nodose rush |
| Juncus xiphioides E. Mey. | |
Leersia oryzoides (L.) Sw. | Rice cutgrass |
| Lemna gibba L. | Humped duckweed |
Lemna minor L. | Lesser duckweed |
| Lemna minuta Kunth | Tiny duckweed |
Lemna perpusilla Torr. | |
| Lemna trisulca L. | Ivy-leafed duckweed |
Limosella aquatica L. | Mudwort |
| Lipocarpha micrantha (Vahl) G. Tucker | |
Lobelia cardinalis L. | Scarlet lobelia |
| Lomatogonium rotatum (L.) Fries ex Fern. | Marsh felwort |
Ludwigia palustris (L.) Ell. | |
| Ludwigia peploides (Kunth) Raven | |
Ludwigia repens J.R. Forst. | |
| Lycopus americanus Muhl. ex W. Bart. | American bugleweed |
Lycopus asper Greene | Rough bugleweed |
| Lysimachia hybrida Michx. | |
Lythrum californicum Torr. & Gray | California loosestrife |
| Marsilea vestita Hook. & Grev. | Pepperwort or Water-clover |
Menyanthes trifoliata L. | Buckbean |
| Mimulus cardinalis Dougl. ex Benth. | Cardinal monkey-flower |
Mimulus dentilobus B.L. Robins. & Fern. | |
| Mimulus glabratus Kunth | Glabrous monkey-flower |
Mimulus guttatus DC. | Common monkey-flower |
| Montia chamissoi (Ledeb. ex Spreng.) Greene | Toad lily |
Muhlenbergia filiformis (Thurb. ex S. Wats.) Rydb. | Pullup muhly |
| Muhlenbergia utilis (Torr.) A.S. Hitchc. | |
Myosotis scorpioides L. | Forget-me-not |
| Myosurus minimus L. | Tiny mouse tail |
Myriophyllum aquaticum (Vell.) Verdc. | |
| Najas guadalupensis (Spreng.) Magnus | Southern water nymph |
Najas marina L. | Pond niad |
| Nymphaea mexicana Zucc. | |
Nymphaea odorata Ait. | Fragrant water lily |
| Oenothera longissima Rydb. | Bridge's evening primrose |
Oenothera organensis Munz | |
| Parnassia fimbriata Koenig | Fringed grass-of-parnasus |
Parnassia parviflora DC. | |
| Paspalum distichum L. | Knotgrass |
Pedicularis groenlandica Retz. | Elephant-head |
| Phalaris arundinacea L. | Reed canary grass |
Phyla lanceolata (Michx.) Greene | Northern frog-fruit |
| Platanthera limosa Lindl. | |
Poa leptocoma Trin. | Bog bluegrass |
| Polygonum amphibium L. | Water smartweed |
Polygonum argyrocoleon Steud. ex Kunze | |
| Polygonum arifolium L. | |
Polygonum bistortoides Pursh | American bistort |
| Polygonum lapathifolium L. | Willow weed |
Polygonum pensylvanicum L. | |
| Polygonum punctatum Ell. | |
Polypogon interruptus Kunth | Ditch polypogon |
| Potamogeton crispus L. | Crisped pondweed |
Potamogeton diversifolius Raf. | |
| Potamogeton filiformis Pers. | Filiform pondweed |
Potamogeton foliosus Raf. | Leafy pondweed |
| Potamogeton gramineus L. | Grass pondweed |
Potamogeton illinoensis Morong | Illinois pondweed |
| Potamogeton natans L. | Floating pondweed |
Potamogeton nodosus Poir. | Long leaf pondweed |
| Potamogeton pectinatus L. | Fennel-leaf pondweed |
Potamogeton pusillus L. | Dwarf pondweed |
| Potentilla glandulosa Lindl. | Glandular cinquefoil |
Potentilla rivalis Nutt. | Brook cinquefoil |
| Potentilla rivalis var. millegrana (Engelm. ex Lehm.) S. Wats. | |
Puccinellia nuttalliana (J.A. Schultes) A.S. Hitchc. | Nutall's alkaligrass |
| Puccinellia parishii A.S. Hitchc. | Parrish's alkaligrass |
Ranunculus cymbalaria Pursh | Marsh buttercup |
| Ranunculus gmelinii DC. | Gmellin's buttercup |
Ranunculus hydrocharoides Gray | |
| Ranunculus macounii Britt. | Macoun's buttercup |
Ranunculus pedatifidus Sm. | Northern butter cup |
| Ranunculus sceleratus L. | Blister buttercup |
Rorippa curvipes Greene | Common yellowcress |
| Rorippa officinale | |
Rorippa palustris (L.) Bess. | |
| Rorippa sphaerocarpa (Gray) Britt. | Roundpod yellowcress |
Rumex tomentella Rech. f. | |
| Ruppia maritima L. | Ditchgrass |
Sagittaria brevirostra Mackenzie & Bush | |
| Sagittaria calycina Engelm. | |
Sagittaria cuneata Sheldon | Arrowleaf |
| Sagittaria graminea Michx. | |
Sagittaria latifolia Willd. | |
| Sagittaria longiloba Engelm. ex J.G. Sm. | |
Salicornia bigelovii Torr. | |
| Salix arctica Pallas | Arctic willow |
Salix exigua Nutt. | Coyote, dusky or narrow leaf willow |
| Salix geyeriana Anderss. | Geyer's willow |
Salix gooddingii | BallBlack willow |
| Salix planifolia Pursh | Planeleaf willow |
Samolus ebracteatus Kunth | |
| Samolus ebracteatus ssp. cuneatus (Small) R. Knuth | |
Scirpus microcarpus J.& K. Presl | Panicled bulrush |
| Scirpus pallidus (Britt.) Fern. | Pale bulrush |
Scutellaria galericulata L. | Little skullcap |
| Scutellaria lateriflora L. | |
Senecio triangularis Hook. | Arrow leaf groundsel |
| Sisyrinchium demissum Greene | Blue-eyed grass |
Sisyrinchium elmeri Greene | |
| Sisyrinchium idahoense Bickn. | Idaho blue-eyed grass |
Sparganium angustifolium Michx. | Narrow leaved bur-reed |
| Sparganium eurycarpum Engelm. ex Gray | Giant bur-reed |
Spiranthes romanzoffiana Cham. | Hooded ladies tresses |
| Spirodela polyrrhiza (L.) Schleid. | Spirodela |
Stachys palustris L. | Marsh betony |
| Suaeda suffrutescens var. detonsa I.M. Johnston | |
Torreyochloa pallida var. pauciflora (J. Presl) J.I. Davis | Weak managrass |
| Triglochin maritimum L. | Maritime arrowgrass |
Triglochin palustre L. | Marsh arrowgrass |
| Typha angustifolia L. | |
Typha domingensis Pers. | Common cattail |
| Typha latifolia L. | Broad-leaved cattail |
Utricularia macrorhiza Le Conte | |
| Valeriana texana Steyermark | |
Verbena scabra Vahl | |
| xxx | American brook lime |
Veronica americana Schwein. ex Benth. | |
| Veronica anagallis-aquatica L. | Water speedwell |
Veronica peregrina L. | Purslane speedwell |
| Zannichellia palustris L. | Horned pondweed |
