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 |
|---|---|---|---|
| Oxygonum dregeanum | Meisn. | 26 | documented |
| Oxygonum sinuatum | Dammer | 21 | documented |
| Oxygonum alatum | Burch. | 20 | documented |
| Oxygonum delagoense | Kuntze | 4 | documented |
| Oxygonum acetosella | Welw. | 0 | below the evidence gate |
| Oxygonum annuum | S.Ortiz & Paiva | 0 | below the evidence gate |
| Oxygonum atriplicifolium | Martelli. | 0 | below the evidence gate |
| Oxygonum auriculatum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum buchananii | (Dammer) J.B.Gillett | 0 | below the evidence gate |
| Oxygonum ellipticum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum fruticosum | Dammer | 0 | below the evidence gate |
| Oxygonum gramineum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum hirtum | Peter | 0 | below the evidence gate |
| Oxygonum leptopus | Mildbr. | 0 | below the evidence gate |
| Oxygonum limbatum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum lineare | De Wild. | 0 | below the evidence gate |
| Oxygonum lobatum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum magdalenae | Dammer ex Peter | 0 | below the evidence gate |
| Oxygonum pachybasis | Milne-Redh. | 0 | below the evidence gate |
| Oxygonum sagittatum | R.A.Graham | 0 | below the evidence gate |
| Oxygonum salicifolium | Dammer | 0 | below the evidence gate |
| Oxygonum schliebenii | Mildbr. | 0 | below the evidence gate |
| Oxygonum stuhlmannii | Dammer | 0 | below the evidence gate |
| Oxygonum subfastigiatum | R.A.Graham | 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.