Every accepted species in the genus is listed. A name links to its page when we hold at least three commercially licensed photographs of it. Where we do not, the row shows how many we actually found, which is usually none.
| Species | Authority | Usable photographs | Page |
|---|---|---|---|
| Potamogeton crispus | L. | 585 | documented |
| Potamogeton perfoliatus | L. | 446 | documented |
| Potamogeton natans | L. | 433 | documented |
| Potamogeton nodosus | Poir. | 280 | documented |
| Potamogeton lucens | L. | 208 | documented |
| Potamogeton richardsonii | Rydb. | 157 | documented |
| Potamogeton cheesemanii | A.Benn. | 124 | documented |
| Potamogeton epihydrus | Raf. | 116 | documented |
| Potamogeton amplifolius | Tuck. | 95 | documented |
| Potamogeton gramineus | L. | 89 | documented |
| Potamogeton alpinus | Balb. | 88 | documented |
| Potamogeton zosteriformis | Fernald | 77 | documented |
| Potamogeton pusillus | L. | 69 | documented |
| Potamogeton praelongus | Wulfen | 50 | documented |
| Potamogeton illinoensis | Morong | 40 | documented |
| Potamogeton obtusifolius | Mert. & W.D.J.Koch | 32 | documented |
| Potamogeton polygonifolius | Pourr. | 30 | documented |
| Potamogeton robbinsii | Oakes | 27 | documented |
| Potamogeton trichoides | Cham. & Schltdl. | 24 | documented |
| Potamogeton schweinfurthii | A.Benn. | 23 | documented |
| Potamogeton spirillus | Tuck. | 23 | documented |
| Potamogeton wrightii | Morong | 23 | documented |
| Potamogeton compressus | L. | 21 | documented |
| Potamogeton foliosus | Raf. | 20 | documented |
| Potamogeton vaseyi | J.W.Robbins | 19 | documented |
| Potamogeton berchtoldii | Fieber | 16 | documented |
| Potamogeton octandrus | Poir. | 16 | documented |
| Potamogeton strictifolius | A.Benn. | 16 | documented |
| Potamogeton suboblongus | Hagstr. | 16 | documented |
| Potamogeton diversifolius | Raf. | 14 | documented |
| Potamogeton hillii | Morong | 13 | documented |
| Potamogeton friesii | Rupr. | 9 | documented |
| Potamogeton ochreatus | Raoul | 6 | documented |
| Potamogeton confervoides | Rchb. | 5 | documented |
| Potamogeton bicupulatus | Fernald | 4 | documented |
| Potamogeton oakesianus | J.W.Robbins | 4 | documented |
| Potamogeton acutifolius | Link | 3 | documented |
| Potamogeton linguatus | Hagstr. | 3 | documented |
| Potamogeton pulcher | Tuck. | 3 | documented |
| Potamogeton coloratus | Hornem. | 3 | below the evidence gate |
| Potamogeton tricarinatus | F.Muell. & A.Benn. | 1 | below the evidence gate |
| Potamogeton × absconditus | Z.Kaplan, Fehrer & Hellq. | 0 | below the evidence gate |
| Potamogeton × aemulans | Z.Kaplan, Hellq. & Fehrer | 0 | below the evidence gate |
| Potamogeton × anguillanus | Koidz. | 0 | below the evidence gate |
| Potamogeton × angustifolius | J.Presl | 0 | below the evidence gate |
| Potamogeton × apertus | Miki | 0 | below the evidence gate |
| Potamogeton × attenuatus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × belorussicus | D.Dubovik | 0 | below the evidence gate |
| Potamogeton × bennettii | Fryer | 0 | below the evidence gate |
| Potamogeton × billupsii | Fryer | 0 | below the evidence gate |
| Potamogeton × biwaensis | Miki | 0 | below the evidence gate |
| Potamogeton × cadburyae | Dandy & G.Taylor | 0 | below the evidence gate |
| Potamogeton × clandestinus | A.A.Bobrov, Zalewska-Gal. & Chemeris | 0 | below the evidence gate |
| Potamogeton × cognatus | Asch. & Graebn. | 0 | below the evidence gate |
| Potamogeton × confinis | Hagstr. | 0 | below the evidence gate |
| Potamogeton × cooperi | (Fryer) Fryer | 0 | below the evidence gate |
| Potamogeton × drepanoides | Z.Kaplan | 0 | below the evidence gate |
| Potamogeton × exilis | Z.Kaplan & Uotila | 0 | below the evidence gate |
| Potamogeton × faurei | (A.Benn.) Miki | 0 | below the evidence gate |
| Potamogeton × faxonii | Morong | 0 | below the evidence gate |
| Potamogeton × fluitans | Roth | 0 | below the evidence gate |
| Potamogeton × franconicus | G.Fisch. | 0 | below the evidence gate |
| Potamogeton × gessnacensis | G.Fisch. | 0 | below the evidence gate |
| Potamogeton × griffithii | A.Benn. | 0 | below the evidence gate |
| Potamogeton × grovesii | Dandy & G.Taylor | 0 | below the evidence gate |
| Potamogeton × hagstromii | A.Benn. | 0 | below the evidence gate |
| Potamogeton × haynesii | Hellq. & G.E.Crow | 0 | below the evidence gate |
| Potamogeton × heslop-harrisonii | W.A.Clark | 0 | below the evidence gate |
| Potamogeton × inbaensis | Kadono | 0 | below the evidence gate |
| Potamogeton × jacobsii | Z.Kaplan, Fehrer & Hellq. | 0 | below the evidence gate |
| Potamogeton × jutlandicus | Zalewska-Gal. | 0 | below the evidence gate |
| Potamogeton × kamogawaensis | Miki | 0 | below the evidence gate |
| Potamogeton × kaplanii | Kottaim. | 0 | below the evidence gate |
| Potamogeton × khuzestanicus | S.Abbasi, Afsharz. & Dinarvand | 0 | below the evidence gate |
| Potamogeton × kyushuensis | Kadono & Wiegleb | 0 | below the evidence gate |
| Potamogeton × lanceolatifolius | (Tiselius) C.D.Preston | 0 | below the evidence gate |
| Potamogeton × lanceolatus | Sm. | 0 | below the evidence gate |
| Potamogeton × leptocephalus | Koidz. | 0 | below the evidence gate |
| Potamogeton × lintonii | Fryer | 0 | below the evidence gate |
| Potamogeton × luxurians | Z.Kaplan | 0 | below the evidence gate |
| Potamogeton × maemetsiae | Zalewska-Gal. & Ronikier | 0 | below the evidence gate |
| Potamogeton × mariensis | Papch. | 0 | below the evidence gate |
| Potamogeton × mucronulatus | (G.Fisch.) Papch. | 0 | below the evidence gate |
| Potamogeton × mysticus | Morong | 0 | below the evidence gate |
| Potamogeton × navicularis | Hagstr. | 0 | below the evidence gate |
| Potamogeton × nericius | Hagstr. | 0 | below the evidence gate |
| Potamogeton × nervigerus | Wolfg. | 0 | below the evidence gate |
| Potamogeton × nitens | Weber | 0 | below the evidence gate |
| Potamogeton × nomotoensis | Kadono & T.Nog. | 0 | below the evidence gate |
| Potamogeton × ogdenii | Hellq. & R.L.Hilton | 0 | below the evidence gate |
| Potamogeton × olivaceus | Baagøe | 0 | below the evidence gate |
| Potamogeton × orientalis | Hagstr. | 0 | below the evidence gate |
| Potamogeton × philippinensis | A.Benn. | 0 | below the evidence gate |
| Potamogeton × prussicus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × pseudofriesii | Dandy & G.Taylor | 0 | below the evidence gate |
| Potamogeton × pseudosarmaticus | Papch. | 0 | below the evidence gate |
| Potamogeton × rectifolius | A.Benn. | 0 | below the evidence gate |
| Potamogeton × ripensis | Baagøe | 0 | below the evidence gate |
| Potamogeton × rivularis | Gillot | 0 | below the evidence gate |
| Potamogeton × salicifolius | Wolfg. | 0 | below the evidence gate |
| Potamogeton × saxonicus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × schreberi | G.Fisch. | 0 | below the evidence gate |
| Potamogeton × scoliophyllus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × serrulifer | Z.Kaplan | 0 | below the evidence gate |
| Potamogeton × sparganiifolius | Laest. ex Fr. | 0 | below the evidence gate |
| Potamogeton × spathulatus | Schrad. ex W.D.J.Koch & Ziz | 0 | below the evidence gate |
| Potamogeton × spathuliformis | (J.W.Robbins) Morong | 0 | below the evidence gate |
| Potamogeton × subrufus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × subsessilis | Hagstr. | 0 | below the evidence gate |
| Potamogeton × sudermanicus | Hagstr. | 0 | below the evidence gate |
| Potamogeton × torssandri | (Tiselius) Dörfl. | 0 | below the evidence gate |
| Potamogeton × tosaensis | Kadono, Horii & T.Yaman. | 0 | below the evidence gate |
| Potamogeton × undulatus | Wolfg. | 0 | below the evidence gate |
| Potamogeton × variifolius | Thore | 0 | below the evidence gate |
| Potamogeton × vepsicus | A.A.Bobrov & Chemeris | 0 | below the evidence gate |
| Potamogeton × versicolor | Z.Kaplan, Hellq. & Fehrer | 0 | below the evidence gate |
| Potamogeton × yamagataensis | Kadono & Wiegleb | 0 | below the evidence gate |
| Potamogeton anguillanus | Koidz. | 0 | below the evidence gate |
| Potamogeton antaicus | Hagstr. | 0 | below the evidence gate |
| Potamogeton australiensis | A.Benn. | 0 | below the evidence gate |
| Potamogeton biformis | Hagstr. | 0 | below the evidence gate |
| Potamogeton chamissoi | A.Benn. | 0 | below the evidence gate |
| Potamogeton chongyangensis | W.X.Wang | 0 | below the evidence gate |
| Potamogeton cristatus | Regel & Maack | 0 | below the evidence gate |
| Potamogeton delavayi | A.Benn. | 0 | below the evidence gate |
| Potamogeton dentatus | Hagstr. | 0 | below the evidence gate |
| Potamogeton distinctus | A.Benn. | 0 | below the evidence gate |
| Potamogeton drummondii | Benth. | 0 | below the evidence gate |
| Potamogeton ferrugineus | Hagstr. | 0 | below the evidence gate |
| Potamogeton floridanus | Small | 0 | below the evidence gate |
| Potamogeton fluitans | Roth | 0 | below the evidence gate |
| Potamogeton fontigenus | Y.H.Guo, X.Z.Sun & H.Q.Wang | 0 | below the evidence gate |
| Potamogeton fryeri | A.Benn. | 0 | below the evidence gate |
| Potamogeton gayi | A.Benn. | 0 | below the evidence gate |
| Potamogeton gessnacensis | G.Fisch. | 0 | below the evidence gate |
| Potamogeton groenlandicus | Hagstr. | 0 | below the evidence gate |
| Potamogeton heterocaulis | Z.S.Diao | 0 | below the evidence gate |
| Potamogeton hoggarensis | Dandy | 0 | below the evidence gate |
| Potamogeton kashiensis | Z.S.Diao | 0 | below the evidence gate |
| Potamogeton lacunatifolius | Papch. | 0 | below the evidence gate |
| Potamogeton maackianus | A.Benn. | 0 | below the evidence gate |
| Potamogeton mandschuriensis | (A.Benn.) A.Benn. | 0 | below the evidence gate |
| Potamogeton marianensis | Cham. & Schltdl. | 0 | below the evidence gate |
| Potamogeton maritima | L. | 0 | below the evidence gate |
| Potamogeton montevidensis | A.Benn. | 0 | below the evidence gate |
| Potamogeton montezumawellensis | Ricketson, G.M.Ricketson & Greenawalt | 0 | below the evidence gate |
| Potamogeton orientalis | Hagstr. | 0 | below the evidence gate |
| Potamogeton oxyphyllus | Miq. | 0 | below the evidence gate |
| Potamogeton papuanicus | G.Wiegleb | 0 | below the evidence gate |
| Potamogeton paramoanus | R.R.Haynes & Holm-Niels. | 0 | below the evidence gate |
| Potamogeton parmatus | Hagstr. | 0 | below the evidence gate |
| Potamogeton parvifolius | Buchenau | 0 | below the evidence gate |
| Potamogeton polygonus | Cham. | 0 | below the evidence gate |
| Potamogeton punense | A.Galán | 0 | below the evidence gate |
| Potamogeton quinquenervius | Hagstr. | 0 | below the evidence gate |
| Potamogeton richardii | Solms | 0 | below the evidence gate |
| Potamogeton rutilus | Wolfg. | 0 | below the evidence gate |
| Potamogeton salicifolius | Wolfg. | 0 | below the evidence gate |
| Potamogeton sarmaticus | Mäemets | 0 | below the evidence gate |
| Potamogeton sclerocarpus | K.Schum. | 0 | below the evidence gate |
| Potamogeton sibiricus | A.Benn. | 0 | below the evidence gate |
| Potamogeton skvortsovii | Klinkova | 0 | below the evidence gate |
| Potamogeton solomonensis | G.Wiegleb | 0 | below the evidence gate |
| Potamogeton spirilliformis | Hagstr. | 0 | below the evidence gate |
| Potamogeton stenostachys | K.Schum. | 0 | below the evidence gate |
| Potamogeton sulcatus | A.Benn. | 0 | below the evidence gate |
| Potamogeton sumatranus | Miq. | 0 | below the evidence gate |
| Potamogeton tennesseensis | Fernald | 0 | below the evidence gate |
| Potamogeton tenuicaulis | F.Muell. | 0 | below the evidence gate |
| Potamogeton tepperi | A.Benn. | 0 | below the evidence gate |
| Potamogeton tubulatus | Hagstr. | 0 | below the evidence gate |
| Potamogeton ulei | K.Schum. | 0 | below the evidence gate |
| Potamogeton uruguayensis | A.Benn. & Graebn. | 0 | below the evidence gate |
| Potamogeton xinganensis | Ma | 0 | below the evidence gate |
This site is commercial, so it can only publish photographs licensed for commercial use. Roughly three quarters of the photographs on iNaturalist are CC BY-NC, which excludes them. A species needs at least three usable photographs before we will build it a page, because a page with one picture and no traits tells you nothing you could not get from a search result, and generating hundreds of thousands of those is precisely the practice that got the previous version of this site deleted.
So the species above without a link are not errors and they are not omissions. They are real, accepted plants that we cannot yet document to the standard we hold ourselves to, and the count in the photographs column is exactly how far short we fall.