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 |
|---|---|---|---|
| Hordeum murinum | L. | 2,165 | documented |
| Hordeum jubatum | L. | 1,307 | documented |
| Hordeum brachyantherum | Nevski | 177 | documented |
| Hordeum vulgare | L. | 97 | documented |
| Hordeum marinum | Huds. | 56 | documented |
| Hordeum brevisubulatum | (Trin.) Link | 36 | documented |
| Hordeum secalinum | Schreb. | 35 | documented |
| Hordeum bulbosum | L. | 22 | documented |
| Hordeum depressum | (Scribn. & J.G.Sm.) Rydb. | 18 | documented |
| Hordeum muticum | J.Presl | 4 | documented |
| Hordeum comosum | J.Presl | 3 | documented |
| Hordeum pusillum | Nutt. | 398 | below the evidence gate |
| Hordeum capense | Thunb. | 2 | below the evidence gate |
| Hordeum stenostachys | Godr. | 1 | below the evidence gate |
| Hordeum × blomii | Thell. | 0 | below the evidence gate |
| Hordeum × intermedium | (Körn.) Carleton | 0 | below the evidence gate |
| Hordeum × lagunculciforme | (Bachteev) Nikif. | 0 | below the evidence gate |
| Hordeum aegiceras | Nees ex Royle | 0 | below the evidence gate |
| Hordeum arizonicum | Covas | 0 | below the evidence gate |
| Hordeum bogdanii | Wilensky | 0 | below the evidence gate |
| Hordeum brachyatherum | Phil. | 0 | below the evidence gate |
| Hordeum californicum | Covas & Stebbins | 0 | below the evidence gate |
| Hordeum chilense | Roem. & Schult. | 0 | below the evidence gate |
| Hordeum cordobense | Bothmer, N.Jacobsen & Nicora | 0 | below the evidence gate |
| Hordeum distichon | L. | 0 | below the evidence gate |
| Hordeum erectifolium | Bothmer, N.Jacobsen & R.B.Jørg. | 0 | below the evidence gate |
| Hordeum euclaston | Steud. | 0 | below the evidence gate |
| Hordeum flexuosum | Nees ex Steud. | 0 | below the evidence gate |
| Hordeum fuegianum | Bothmer, N.Jacobsen & R.B.Jørg. | 0 | below the evidence gate |
| Hordeum guatemalense | Bothmer, N.Jacobsen & R.B.Jørg. | 0 | below the evidence gate |
| Hordeum halophilum | Griseb. | 0 | below the evidence gate |
| Hordeum jungblutii | Reichling | 0 | below the evidence gate |
| Hordeum lagunculiforme | Bacht. | 0 | below the evidence gate |
| Hordeum lechleri | (Steud.) Schenck | 0 | below the evidence gate |
| Hordeum montanense | Scribn. ex Beal | 0 | below the evidence gate |
| Hordeum nutans | Alef. | 0 | below the evidence gate |
| Hordeum parodii | Covas | 0 | below the evidence gate |
| Hordeum patagonicum | (Hauman) Covas | 0 | below the evidence gate |
| Hordeum pavisi | Préaub. | 0 | below the evidence gate |
| Hordeum procerum | Nevski | 0 | below the evidence gate |
| Hordeum pubiflorum | Hook.f. | 0 | below the evidence gate |
| Hordeum roshevitzii | Bowden | 0 | below the evidence gate |
| Hordeum tetraploidum | Covas | 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.