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 |
|---|---|---|---|
| Strophanthus divaricatus | (Lour.) Hook. & Arn. | 68 | documented |
| Strophanthus gerrardii | Stapf | 15 | documented |
| Strophanthus sarmentosus | DC. | 11 | documented |
| Strophanthus wightianus | Wall. ex Wight | 9 | documented |
| Strophanthus kombe | Oliv. | 7 | documented |
| Strophanthus gratus | (Wall. & Hook. ex Benth.) Baill. | 5 | documented |
| Strophanthus speciosus | (Ward & Harv.) Reber | 5 | documented |
| Strophanthus petersianus | Klotzsch | 3 | documented |
| Strophanthus amboensis | (Schinz) Engl. & Pax ex Pax | 3 | below the evidence gate |
| Strophanthus courmontii | Sacleux ex Franch. | 1 | below the evidence gate |
| Strophanthus eminii | Asch. ex Pax | 1 | below the evidence gate |
| Strophanthus welwitschii | (Baill.) K.Schum. | 1 | below the evidence gate |
| Strophanthus arnoldianus | De Wild. & T.Durand | 0 | below the evidence gate |
| Strophanthus barteri | Franch. | 0 | below the evidence gate |
| Strophanthus bequaertii | Staner & Michotte | 0 | below the evidence gate |
| Strophanthus boivinii | Baill. | 0 | below the evidence gate |
| Strophanthus bullenianus | Mast. | 0 | below the evidence gate |
| Strophanthus caudatus | Kurz | 0 | below the evidence gate |
| Strophanthus congoensis | Franch. | 0 | below the evidence gate |
| Strophanthus demeusei | Dewèvre | 0 | below the evidence gate |
| Strophanthus gardeniiflorus | Gilg | 0 | below the evidence gate |
| Strophanthus gracilis | K.Schum. & Pax ex Pax | 0 | below the evidence gate |
| Strophanthus hispidus | DC. | 0 | below the evidence gate |
| Strophanthus holosericeus | K.Schum. & Gilg | 0 | below the evidence gate |
| Strophanthus hypoleucos | Stapf | 0 | below the evidence gate |
| Strophanthus ledienii | Stein | 0 | below the evidence gate |
| Strophanthus luteolus | Codd | 0 | below the evidence gate |
| Strophanthus mirabilis | Gilg | 0 | below the evidence gate |
| Strophanthus mortehanii | De Wild. | 0 | below the evidence gate |
| Strophanthus nicholsonii | Holmes | 0 | below the evidence gate |
| Strophanthus parviflorus | Franch. | 0 | below the evidence gate |
| Strophanthus perakensis | Scort. ex King & Gamble | 0 | below the evidence gate |
| Strophanthus preussii | Engl. & Pax | 0 | below the evidence gate |
| Strophanthus puberulus | Pax | 0 | below the evidence gate |
| Strophanthus singaporianus | Gilg | 0 | below the evidence gate |
| Strophanthus thollonii | Franch. | 0 | below the evidence gate |
| Strophanthus vanderijstii | Staner | 0 | below the evidence gate |
| Strophanthus wallichii | A.DC. | 0 | below the evidence gate |
| Strophanthus zimmermannianus | Monach. | 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.