Potamogetonaceae

Althenia

     Althenia hearnii T.D.Macfarl. & D.D.Sokoloff

     Althenia setacea Delile ex Petit

Groenlandia

     Groenlandia densa (L.) Fourr.

Potamogeton

     Potamogeton

     Potamogeton abyssinicus Hochst.

     Potamogeton acutifolius Link ex Roem. & Schult.

     Potamogeton alpinus Balb.

     Potamogeton alpinus subsp. tenuifolius (Raf.) Hultén

     Potamogeton alpinus var. tenuifolius (Raf.) Ogden

     Potamogeton americanus Cham. & Schltdl.

     Potamogeton amplifolius Tuck.

     Potamogeton angustifolius Bercht. & J.Presl

     Potamogeton aschersonii A.Benn.

     Potamogeton australiensis A.Benn.

     Potamogeton berchtoldii Fieber

     Potamogeton bicupulatus Fernald

     Potamogeton borealis Raf.

     Potamogeton bupleuroides Fernald

     Potamogeton burkartii Horn ex Tur

     Potamogeton capillaceus Poir.

     Potamogeton capillaceus var. atripes Poir. & Fernald

     Potamogeton champlainii A.Benn.

     Potamogeton claytonii Tuck.

     Potamogeton clystocarpus Fernald

     Potamogeton coloratus Hornem.

     Potamogeton compressus L.

     Potamogeton confervoides Rchb.

     Potamogeton conjungens Hagstr.

     Potamogeton crispus L.

     Potamogeton curtissii Morong

     Potamogeton decipiens Nolte

     Potamogeton dimorphus Raf.

     Potamogeton distinctus A.Benn.

     Potamogeton diversifolius Raf.

     Potamogeton diversifolius var. multi-denticulatus Morong

     Potamogeton diversifolius var. trichophyllus Morong

     Potamogeton epihydrus Raf.

     Potamogeton epihydrus var. nuttallii (Cham. & Schltdl.) Fernald

     Potamogeton fibrillosus Fernald

     Potamogeton filiformis Pers.

     Potamogeton filiformis subsp. filiformis

     Potamogeton filiformis subsp. occidentalis (J.W.Robbins) R.R.Haynes, Les & M.Král

     Potamogeton filiformis var. alpinus (Blytt) Asch. & Graebn.

     Potamogeton filiformis var. borealis (Raf.) H.St.John

     Potamogeton filiformis var. macounii (Morong ex Macoun) Morong

     Potamogeton filiformis var. occidentalis (J.W.Robbins) Morong

     Potamogeton floridanus Small

     Potamogeton fluitans Roth

     Potamogeton foliosus Raf.

     Potamogeton foliosus Raf. var. foliosus

     Potamogeton foliosus subsp. foliosus

     Potamogeton foliosus var. californicus Morong

     Potamogeton foliosus var. fibrillosus (Fernald) R.R.Haynes & Reveal

     Potamogeton foliosus var. macellus Fernald

     Potamogeton fragillimus Hagstr.

     Potamogeton friesii Rupr.

     Potamogeton fryeri A.Benn.

     Potamogeton gayii A.Benn.

     Potamogeton gemmiparus (J.W.Robbins) J.W.Robbins ex Morong

     Potamogeton gramineus L.

     Potamogeton gramineus L. x P. illinoensis Morong

     Potamogeton gramineus var. myriophyllus J.W.Robbins

     Potamogeton gramineus var. spathuliformis J.W.Robbins

     Potamogeton groenlandicus Hagstr.

     Potamogeton hagstromii A.Benn.

     Potamogeton heterophyllus f. maximus Morong

     Potamogeton heterophyllus f. minimus Morong

     Potamogeton heterophyllus f. myriophyllus (J.W.Robbins) Morong

     Potamogeton heterophyllus Schreb.

     Potamogeton hillii Morong

     Potamogeton hybridus Michx.

     Potamogeton illinoensis Morong

     Potamogeton illinoensis Morong x P. nodosus Poir.

     Potamogeton insulanus Hagstr.

     Potamogeton interruptus Kit.

     Potamogeton lateralis Morong

     Potamogeton liebmanni Buchanan ex Magnus

     Potamogeton lonchites Tuck.

     Potamogeton lonchites var. novaboracensis Morong

     Potamogeton longifolius J.Gay ex Poir.

     Potamogeton longiligulatus Fernald

     Potamogeton lucens L.

     Potamogeton lucens var. connecticutensis J.W.Robbins

     Potamogeton machianus Lowe ex Graebn.

     Potamogeton marianensis Cham. & Schltdl.

     Potamogeton marinus var. occidentalis J.W.Robbins

     Potamogeton mexicanus A.Benn.

     Potamogeton microstachys var. subellipticus Fernald

     Potamogeton miduhikimo Makino

     Potamogeton montanensis Gand.

     Potamogeton montevidensis A.Benn.

     Potamogeton mucronatus Schrad.

     Potamogeton mysticus Morong

     Potamogeton natans L.

     Potamogeton niagarensis Tuck.

     Potamogeton nitens Weber

     Potamogeton nodosus Poir.

     Potamogeton nuttallii Cham. & Schltdl.

     Potamogeton oakesianus J.W.Robbins ex A.Gray

     Potamogeton oblongus Hegetschw.

     Potamogeton obtusifolius Mert. & W.D.J.Koch

     Potamogeton ochreatus Raoul

     Potamogeton octandrus Poir.

     Potamogeton ogdenii Hellq. & R.L.Hilton

     Potamogeton oxyphyllus Miq.

     Potamogeton paramoanus R.R.Haynes & Holm-Niels.

     Potamogeton parvifolius Buchenau

     Potamogeton pauciflorus Lam.

     Potamogeton pectinatus L.

     Potamogeton pectinatus var. latifolius J.W.Robbins

     Potamogeton pedersenii Tur

     Potamogeton perfoliatus L.

     Potamogeton perfoliatus subsp. richardsonii (A.Benn.) Hultén

     Potamogeton perfoliatus var. bupleuroides (Fernald) Farw.

     Potamogeton perfoliatus var. lanceolatus J.W.Robbins

     Potamogeton perplexus A.Benn.

     Potamogeton polygonifolius Pourr.

     Potamogeton polygonus Cham. & Schltdl.

     Potamogeton porsildiorum Fernald

     Potamogeton porteri Fernald

     Potamogeton praelongus Wulfen

     Potamogeton pulcher Tuck.

     Potamogeton pusillus L.

     Potamogeton pusillus L. subsp. pusillus

     Potamogeton pusillus L. var. pusillus

     Potamogeton pusillus subsp. tenuissimus (Mert. & W.D.J.Koch) R.R.Haynes & Hellq.

     Potamogeton pusillus subvar. interruptus J.W.Robbins

     Potamogeton pusillus var. gemmiparus A.Gray

     Potamogeton pusillus var. gemmiparus J.W.Robbins

     Potamogeton pusillus var. major Fr.

     Potamogeton pusillus var. mucronatus (C.Presl) Hook.f.

     Potamogeton pusillus var. polyphyllus Morong

     Potamogeton pusillus var. tenuissimus Koch

     Potamogeton pusillus var. tenuissimus Mert. & W.D.J.Koch

     Potamogeton rectifolius A.Benn.

     Potamogeton richardii Solms

     Potamogeton richardsonii (A.Benn.) Rydb.

     Potamogeton richardsonii (Benn.) Rydb.

     Potamogeton robbinsii Oakes

     Potamogeton rotundatus Hagstr.

     Potamogeton rufescens Schrad.

     Potamogeton schweinfurthii A.Benn.

     Potamogeton sibiricus A.Benn.

     Potamogeton spathuliformis (J.W.Robbins) Morong

     Potamogeton spirilliformis Hagstr.

     Potamogeton spirillus Tuck.

     Potamogeton spoliatus Hagstr.

     Potamogeton striatus Ruiz & Pav.

     Potamogeton strictifolius A.Benn.

     Potamogeton subnitens Hagstr.

     Potamogeton subrufus Hagstr.

     Potamogeton subsessilis Hagstr.

     Potamogeton tennesseensis Fernald

     Potamogeton tenuicaulis F.Muell.

     Potamogeton tenuifolius Phil.

     Potamogeton tepperi A.Benn.

     Potamogeton thunbergii Cham. & Schltdl.

     Potamogeton trichoides Cham. & Schltdl.

     Potamogeton tuckermanii J.W.Robbins ex A.Gray

     Potamogeton vaginatus Turcz.

     Potamogeton vaseyi J.W.Robbins ex A.Gray

     Potamogeton vaseyi var. latifolius Morong

     Potamogeton wrightii Morong

     Potamogeton x faxoni Morong

     Potamogeton x faxonii

     Potamogeton x haynesii Hellq. & G.E.Crow

     Potamogeton x mysticus Morong

     Potamogeton x ogdenii B.Boivin

     Potamogeton x scoliophyllus Hagstr.

     Potamogeton x subnitens Hagstr.

     Potamogeton zizii f. pulcherrimus Hagstr.

     Potamogeton zosterifolius Schumach.

     Potamogeton zosteriformis Fernald

Stuckenia

     Stuckenia filiformis (Pers.) Börner

     Stuckenia macrocarpus (Dobrochot.) Tzvelev

     Stuckenia pectinata (L.) Börner

     Stuckenia striata (Ruiz & Pav.) Holub

Zannichellia

     Zannichellia

     Zannichellia indica Morong

     Zannichellia palustris L.

     Zannichellia palustris subsp. palustris

     Zannichellia palustris var. major Hartm.

     Zannichellia peltata Bertol.