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 |
|---|---|---|---|
| Najas marina | L. | 78 | documented |
| Najas guadalupensis | (Spreng.) Magnus | 35 | documented |
| Najas minor | All. | 34 | documented |
| Najas flexilis | (Willd.) Rostk. & W.L.E.Schmidt | 17 | documented |
| Najas horrida | A.Braun ex Magnus | 17 | documented |
| Najas wrightiana | A.Braun | 10 | documented |
| Najas indica | (Willd.) Cham. | 6 | documented |
| Najas browniana | Rendle | 3 | documented |
| Najas gracillima | (A.Braun ex Engelm.) Magnus | 2 | below the evidence gate |
| Najas major | All. | 1 | below the evidence gate |
| Najas tenuifolia | R.Br. | 1 | below the evidence gate |
| Najas affinis | Rendle | 0 | below the evidence gate |
| Najas ancistrocarpa | A.Braun ex Magnus | 0 | below the evidence gate |
| Najas arguta | Kunth | 0 | below the evidence gate |
| Najas australis | Bory ex Rendle | 0 | below the evidence gate |
| Najas baldwinii | Horn | 0 | below the evidence gate |
| Najas brevistyla | Rendle | 0 | below the evidence gate |
| Najas canadensis | Michx. | 0 | below the evidence gate |
| Najas chinensis | N.Z.Wang | 0 | below the evidence gate |
| Najas conferta | (A.Braun) A.Braun | 0 | below the evidence gate |
| Najas faveolata | A.Br. ex Magnus | 0 | below the evidence gate |
| Najas filifolia | R.R.Haynes | 0 | below the evidence gate |
| Najas graminea | Delile | 0 | below the evidence gate |
| Najas grossareolata | L.Triest | 0 | below the evidence gate |
| Najas hagerupii | Horn | 0 | below the evidence gate |
| Najas halophila | L.Triest | 0 | below the evidence gate |
| Najas heteromorpha | Griff. ex Voigt | 0 | below the evidence gate |
| Najas kurziana | Rendle | 0 | below the evidence gate |
| Najas madagascariensis | Rendle | 0 | below the evidence gate |
| Najas malesiana | W.J.de Wilde | 0 | below the evidence gate |
| Najas oguraensis | Miki | 0 | below the evidence gate |
| Najas pectinata | Magn. ex Ascherson & Schweinfurth | 0 | below the evidence gate |
| Najas pectinata | (Parl.) Magnus | 0 | below the evidence gate |
| Najas pseudogracillima | L.Triest | 0 | below the evidence gate |
| Najas rigida | Griff. | 0 | below the evidence gate |
| Najas schweinfurthii | Magnus | 0 | below the evidence gate |
| Najas tenuicaulis | Miki | 0 | below the evidence gate |
| Najas tenuis | Magnus | 0 | below the evidence gate |
| Najas tenuissima | (A.Braun ex Magnus) Magnus | 0 | below the evidence gate |
| Najas testui | Rendle | 0 | below the evidence gate |
| Najas welwitschii | Rendle | 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.