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 |
|---|---|---|---|
| Clarkia unguiculata | Lindl. | 719 | documented |
| Clarkia purpurea | (Curtis) A.Nelson & J.F.Macbr. | 713 | documented |
| Clarkia rubicunda | (Lindl.) F.H.Lewis & M.E.Lewis | 567 | documented |
| Clarkia rhomboidea | Douglas | 313 | documented |
| Clarkia concinna | Greene | 260 | documented |
| Clarkia bottae | (Spach) F.H.Lewis & M.E.Lewis | 150 | documented |
| Clarkia amoena | (Lehm.) A.Nelson & J.F.Macbr. | 141 | documented |
| Clarkia epilobioides | (Nutt.) A.Nelson & J.F.Macbr. | 127 | documented |
| Clarkia lewisii | P.H.Raven & D.R.Parn. | 125 | documented |
| Clarkia cylindrica | (Jeps.) F.H.Lewis & M.E.Lewis | 96 | documented |
| Clarkia delicata | (Abrams) A.Nelson & J.F.Macbr. | 62 | documented |
| Clarkia pulchella | Pursh | 61 | documented |
| Clarkia franciscana | F.H.Lewis & P.H.Raven | 58 | documented |
| Clarkia dudleyana | (Abrams) J.F.Macbr. | 52 | documented |
| Clarkia gracilis | A.Nelson & J.F.Macbr. | 50 | documented |
| Clarkia heterandra | (Torr.) F.H.Lewis & P.H.Raven | 44 | documented |
| Clarkia biloba | A.Nelson & J.F.Macbr. | 43 | documented |
| Clarkia breweri | (A.Gray) Greene | 41 | documented |
| Clarkia arcuata | (Kellogg) A.Nelson & J.F.Macbr. | 37 | documented |
| Clarkia affinis | F.H.Lewis & M.E.Lewis | 36 | documented |
| Clarkia modesta | Jeps. | 36 | documented |
| Clarkia similis | F.H.Lewis & W.R.Ernst | 30 | documented |
| Clarkia tenella | (Cav.) F.H.Lewis & M.E.Lewis | 28 | documented |
| Clarkia xantiana | A.Gray | 24 | documented |
| Clarkia speciosa | F.H.Lewis & M.E.Lewis | 23 | documented |
| Clarkia williamsonii | (Durand & Hilg.) F.H.Lewis & M.E.Lewis | 20 | documented |
| Clarkia davyi | (Jeps.) F.H.Lewis | 18 | documented |
| Clarkia prostrata | F.H.Lewis & M.E.Lewis | 16 | documented |
| Clarkia lassenensis | (Eastw.) F.H.Lewis & M.E.Lewis | 8 | documented |
| Clarkia imbricata | F.H.Lewis & M.E.Lewis | 7 | documented |
| Clarkia mildrediae | (A.Heller) F.H.Lewis & M.E.Lewis | 3 | documented |
| Clarkia springvillensis | Vasek | 3 | documented |
| Clarkia rostrata | W.S.Davis | 2 | below the evidence gate |
| Clarkia virgata | Greene | 2 | below the evidence gate |
| Clarkia australis | E.Small | 1 | below the evidence gate |
| Clarkia exilis | F.H.Lewis & Vasek | 1 | below the evidence gate |
| Clarkia borealis | E.Small | 0 | below the evidence gate |
| Clarkia jolonensis | D.R.Parn. | 0 | below the evidence gate |
| Clarkia lingulata | F.H.Lewis & M.E.Lewis | 0 | below the evidence gate |
| Clarkia mosquinii | E.Small | 0 | below the evidence gate |
| Clarkia stellata | Mosquin | 0 | below the evidence gate |
| Clarkia tembloriensis | Vasek | 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.