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 |
|---|---|---|---|
| Polytrichum juniperinum | Hedw. | 1,655 | documented |
| Polytrichum piliferum | Hedw. | 909 | documented |
| Polytrichum formosum | Hedw. | 884 | documented |
| Polytrichum commune | Hedw. | 749 | documented |
| Polytrichum strictum | Menzies ex Brid. | 94 | documented |
| Polytrichum ohioense | Renauld & Cardot | 47 | documented |
| Polytrichum longisetum | Sw. ex Brid. | 22 | documented |
| Polytrichum subpilosum | P.Beauv. | 8 | documented |
| Polytrichum pallidisetum | Funck | 4 | documented |
| Polytrichum perigoniale | Michx. | 4 | documented |
| Polytrichum × stefureacii | Plăm. | 0 | below the evidence gate |
| Polytrichum angustifolium | Mitt. | 0 | below the evidence gate |
| Polytrichum appalachianum | L.E.Anderson | 0 | below the evidence gate |
| Polytrichum brachymitrium | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum breviceps | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum circinnatulum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum cupreum | G.Negri | 0 | below the evidence gate |
| Polytrichum densifolium | Wilson ex Mitt. | 0 | below the evidence gate |
| Polytrichum elegans | Welw. & Duby | 0 | below the evidence gate |
| Polytrichum elongatum | P.Beauv. | 0 | below the evidence gate |
| Polytrichum ericoides | Hampe | 0 | below the evidence gate |
| Polytrichum gracilisetum | Besch. ex Müll.Hal. | 0 | below the evidence gate |
| Polytrichum hyperboreum | R.Br. | 0 | below the evidence gate |
| Polytrichum jensenii | I.Hagen | 0 | below the evidence gate |
| Polytrichum juniperellum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum microcephalum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum micropyxis | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum oerstedianum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum papillosum | Dyachenko | 0 | below the evidence gate |
| Polytrichum polakowskyi | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum recurvatum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum recurvipilum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum stolonigerum | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum swartzii | Hartm. | 0 | below the evidence gate |
| Polytrichum tonkinense | Thér. & R.Henry | 0 | below the evidence gate |
| Polytrichum torquatum | (Mitt. ex Osada & G.L.Sm.) N.E.Bell & Hyvönen | 0 | below the evidence gate |
| Polytrichum trachythecium | Müll.Hal. | 0 | below the evidence gate |
| Polytrichum vaginatum | Warnst. | 0 | below the evidence gate |
| Polytrichum xanthopilum | Wilson ex Mitt. | 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.