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 |
|---|---|---|---|
| Tribulus terrestris | L. | 2,009 | documented |
| Tribulus cistoides | L. | 206 | documented |
| Tribulus cristatus | C.Presl | 17 | documented |
| Tribulus zeyheri | Sond. | 13 | documented |
| Tribulus hirsutus | Benth. | 4 | documented |
| Tribulus pentandrus | Forssk. | 5 | below the evidence gate |
| Tribulus astrocarpus | F.Muell. | 2 | below the evidence gate |
| Tribulus suberosus | H.Eichler ex R.M.Barker | 2 | below the evidence gate |
| Tribulus adelacanthus | R.M.Barker | 0 | below the evidence gate |
| Tribulus arabicus | Hosni | 0 | below the evidence gate |
| Tribulus bimucronatus | Viv. | 0 | below the evidence gate |
| Tribulus echinops | Kers | 0 | below the evidence gate |
| Tribulus eichlerianus | K.L.Wilson | 0 | below the evidence gate |
| Tribulus excrucians | Wawra | 0 | below the evidence gate |
| Tribulus forrestii | F.Muell. | 0 | below the evidence gate |
| Tribulus hystrix | R.Br. | 0 | below the evidence gate |
| Tribulus incanus | Hosni | 0 | below the evidence gate |
| Tribulus kaiseri | Hosni | 0 | below the evidence gate |
| Tribulus macrocarpus | F.Muell. ex Benth. | 0 | below the evidence gate |
| Tribulus macropterus | Boiss. | 0 | below the evidence gate |
| Tribulus megistopterus | Kralik | 0 | below the evidence gate |
| Tribulus micrococcus | Domin | 0 | below the evidence gate |
| Tribulus minutus | Leichh. ex Benth. | 0 | below the evidence gate |
| Tribulus mollis | Ehrenb. ex Schweinf. | 0 | below the evidence gate |
| Tribulus occidentalis | R.Br. | 0 | below the evidence gate |
| Tribulus parvispinus | C.Presl | 0 | below the evidence gate |
| Tribulus platypterus | Benth. | 0 | below the evidence gate |
| Tribulus ranunculiflorus | F.Muell. | 0 | below the evidence gate |
| Tribulus spurius | Kralik | 0 | below the evidence gate |
| Tribulus subramanyamii | P.Singh, G.S.Giri & V.Singh | 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.