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 |
|---|---|---|---|
| Umbilicus rupestris | (Salisb.) Dandy | 894 | documented |
| Umbilicus horizontalis | (Guss.) DC. | 60 | documented |
| Umbilicus gaditanus | Boiss. | 17 | documented |
| Umbilicus intermedius | Boiss. | 7 | documented |
| Umbilicus schmidtii | Bolle. | 5 | documented |
| Umbilicus heylandianus | Webb & Berthel. | 4 | documented |
| Umbilicus parviflorus | DC. | 3 | documented |
| Umbilicus patens | Pomel | 2 | below the evidence gate |
| Umbilicus luteus | (Huds.) Webb & Berthel. | 1 | below the evidence gate |
| Umbilicus albido-opacus | Carlström | 0 | below the evidence gate |
| Umbilicus botryoides | Hochst. ex A.Rich. | 0 | below the evidence gate |
| Umbilicus chloranthus | Heldr. & Sartori ex Boiss. | 0 | below the evidence gate |
| Umbilicus citrinus | Wolley-Dod | 0 | below the evidence gate |
| Umbilicus ferganicus | Popov | 0 | below the evidence gate |
| Umbilicus mirus | (Pamp.) Greuter | 0 | below the evidence gate |
| Umbilicus paniculiformis | Wickens | 0 | below the evidence gate |
| Umbilicus tropaeolifolius | Boiss. | 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.