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 |
|---|---|---|---|
| Porophyllum gracile | Benth. | 333 | documented |
| Porophyllum ruderale | (Jacq.) Cass. | 145 | documented |
| Porophyllum scoparium | A.Gray | 80 | documented |
| Porophyllum linaria | (Cav.) DC. | 42 | documented |
| Porophyllum leiocarpum | Rydb. | 29 | documented |
| Porophyllum punctatum | S.F.Blake | 12 | documented |
| Porophyllum crassifolium | S.Watson | 11 | documented |
| Porophyllum lanceolatum | DC. | 7 | documented |
| Porophyllum linifolium | DC. | 5 | documented |
| Porophyllum obscurum | (Spreng.) DC. | 4 | documented |
| Porophyllum pausodynum | B.L.Rob. & Greenm. | 3 | documented |
| Porophyllum cabrerae | D.J.N.Hind | 2 | below the evidence gate |
| Porophyllum pygmaeum | D.J.Keil & Morefield | 2 | below the evidence gate |
| Porophyllum amplexicaule | Engelm. ex A.Gray | 0 | below the evidence gate |
| Porophyllum angustissimum | Gardner | 0 | below the evidence gate |
| Porophyllum bahiense | D.J.N.Hind | 0 | below the evidence gate |
| Porophyllum calcicola | B.L.Rob. & Greenm. | 0 | below the evidence gate |
| Porophyllum coloratum | DC. | 0 | below the evidence gate |
| Porophyllum filiforme | Rydb. | 0 | below the evidence gate |
| Porophyllum greggii | A.Gray | 0 | below the evidence gate |
| Porophyllum hasslerianum | Chodat | 0 | below the evidence gate |
| Porophyllum lindenii | Sch.Bip. | 0 | below the evidence gate |
| Porophyllum maritimum | Brandegee | 0 | below the evidence gate |
| Porophyllum oppositifolium | DC. | 0 | below the evidence gate |
| Porophyllum oppositifolium | Kuntze | 0 | below the evidence gate |
| Porophyllum pringlei | B.L.Rob. | 0 | below the evidence gate |
| Porophyllum tagetoides | (Kunth) DC. | 0 | below the evidence gate |
| Porophyllum tarapacanum | Zoellner | 0 | below the evidence gate |
| Porophyllum tridentatum | Benth. | 0 | below the evidence gate |
| Porophyllum viridiflorum | DC. | 0 | below the evidence gate |
| Porophyllum warnockii | R.R.Johnson | 0 | below the evidence gate |
| Porophyllum zimapanum | B.L.Turner | 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.