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 |
|---|---|---|---|
| Isolona campanulata | Engl. & Diels | 0 | below the evidence gate |
| Isolona capuronii | Cavaco & Keraudren | 0 | below the evidence gate |
| Isolona cauliflora | Verdc. | 0 | below the evidence gate |
| Isolona congolana | (De Wild. & T.Durand) Engl. & Diels | 0 | below the evidence gate |
| Isolona cooperi | Hutch. & Dalziel ex G.P.Cooper & Record | 0 | below the evidence gate |
| Isolona deightonii | Keay | 0 | below the evidence gate |
| Isolona dewevrei | (De Wild. & T.Durand) Engl. & Diels | 0 | below the evidence gate |
| Isolona ghesquierei | Cavaco & Keraudren | 0 | below the evidence gate |
| Isolona heinsenii | Engl. & Diels | 0 | below the evidence gate |
| Isolona hexaloba | (Pierre) Engl. & Diels | 0 | below the evidence gate |
| Isolona humbertiana | Ghesq. ex Cavaco & Keraudr. | 0 | below the evidence gate |
| Isolona lebrunii | Boutique | 0 | below the evidence gate |
| Isolona letestui | Pellegr. | 0 | below the evidence gate |
| Isolona linearis | Couvreur | 0 | below the evidence gate |
| Isolona madagascariensis | (A.DC.) Engl. | 0 | below the evidence gate |
| Isolona perrieri | Diels | 0 | below the evidence gate |
| Isolona pilosa | Diels | 0 | below the evidence gate |
| Isolona pleurocarpa | Diels | 0 | below the evidence gate |
| Isolona thonneri | (De Wild. & T.Durand) Engl. & Diels | 0 | below the evidence gate |
| Isolona zenkeri | Engl. | 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.