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 |
|---|---|---|---|
| Onopordum acanthium | L. | 1,352 | documented |
| Onopordum illyricum | L. | 74 | documented |
| Onopordum macracanthum | Schousb. | 38 | documented |
| Onopordum boissierianum | Raab-Straube & Greuter | 25 | documented |
| Onopordum acaulon | L. | 21 | documented |
| Onopordum nervosum | Boiss. | 13 | documented |
| Onopordum bracteatum | Boiss. & Heldr. | 11 | documented |
| Onopordum tauricum | Willd. | 6 | documented |
| Onopordum cynarocephalum | Boiss. & C.I.Blanche | 5 | documented |
| Onopordum caulescens | d'Urv. | 4 | documented |
| Onopordum dissectum | Murb. | 3 | documented |
| Onopordum leptolepis | DC. | 2 | below the evidence gate |
| Onopordum alexandrinum | Boiss. | 0 | below the evidence gate |
| Onopordum algeriense | (Munby) Pomel | 0 | below the evidence gate |
| Onopordum ambiguum | Fresen. | 0 | below the evidence gate |
| Onopordum anatolicum | Boiss. & Heldr. ex Eig | 0 | below the evidence gate |
| Onopordum arenarium | (Desf.) Pomel | 0 | below the evidence gate |
| Onopordum armenum | Grossh. | 0 | below the evidence gate |
| Onopordum blancheanum | (Eig) Danin | 0 | below the evidence gate |
| Onopordum canum | Eig | 0 | below the evidence gate |
| Onopordum carduchorum | Bornm. & Beauverd | 0 | below the evidence gate |
| Onopordum carduelium | Bolle | 0 | below the evidence gate |
| Onopordum carduiforme | Boiss. | 0 | below the evidence gate |
| Onopordum carmanicum | (Bornm.) Bornm. | 0 | below the evidence gate |
| Onopordum cinereum | Grossh. | 0 | below the evidence gate |
| Onopordum corymbosum | Willk. | 0 | below the evidence gate |
| Onopordum cyrenaicum | Maire & Weiller | 0 | below the evidence gate |
| Onopordum dyris | Maire | 0 | below the evidence gate |
| Onopordum elongatum | Lam. | 0 | below the evidence gate |
| Onopordum eriocephalum | Rouy | 0 | below the evidence gate |
| Onopordum espinae | Coss. | 0 | below the evidence gate |
| Onopordum heteracanthum | C.A.Mey. | 0 | below the evidence gate |
| Onopordum hinojense | Talavera, Balao, Casim.-Sor., M.Talavera, Terrab & M.Á.Ortiz | 0 | below the evidence gate |
| Onopordum horridum | Viv. | 0 | below the evidence gate |
| Onopordum humile | Loscos ex Pau | 0 | below the evidence gate |
| Onopordum laconicum | Heldr. & Sartori ex Rouy | 0 | below the evidence gate |
| Onopordum macranthum | 0 | below the evidence gate | |
| Onopordum macrocanthum | d'Urv. | 0 | below the evidence gate |
| Onopordum macrocephalum | Eig | 0 | below the evidence gate |
| Onopordum magrebiense | Talavera, Balao, Casim.-Sor., M.Talavera, Terrab & M.Á.Ortiz | 0 | below the evidence gate |
| Onopordum majori | Beauverd | 0 | below the evidence gate |
| Onopordum mesatlanticum | Emb. & Maire | 0 | below the evidence gate |
| Onopordum micropterum | Pau | 0 | below the evidence gate |
| Onopordum minor | L. | 0 | below the evidence gate |
| Onopordum myriacanthum | Boiss. | 0 | below the evidence gate |
| Onopordum nogalesi | Svent. | 0 | below the evidence gate |
| Onopordum parnassicum | Boiss. & Heldr. | 0 | below the evidence gate |
| Onopordum platylepis | Coss. ex Murb. | 0 | below the evidence gate |
| Onopordum polycephalum | Boiss. | 0 | below the evidence gate |
| Onopordum prjachinii | Tamamsch. | 0 | below the evidence gate |
| Onopordum seravschanicum | Tamamsch. | 0 | below the evidence gate |
| Onopordum sibthorpianum | Boiss. & Heldr. | 0 | below the evidence gate |
| Onopordum turcicum | Danin | 0 | below the evidence gate |
| Onopordum wallianum | Maire | 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.