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 |
|---|---|---|---|
| Betula pendula | Roth | 5,558 | documented |
| Betula alleghaniensis | Britton | 5,167 | documented |
| Betula papyrifera | Marshall | 3,014 | documented |
| Betula populifolia | Marshall | 1,091 | documented |
| Betula pubescens | Ehrh. | 1,054 | documented |
| Betula lenta | L. | 1,018 | documented |
| Betula nigra | L. | 908 | documented |
| Betula nana | L. | 366 | documented |
| Betula cordifolia | Regel | 240 | documented |
| Betula occidentalis | Hook. | 238 | documented |
| Betula pumila | L. | 218 | documented |
| Betula glandulosa | Michx. | 176 | documented |
| Betula ermanii | Cham. | 78 | documented |
| Betula humilis | Schrank | 45 | documented |
| Betula fruticosa | Pall. | 28 | documented |
| Betula davurica | Pall. | 22 | documented |
| Betula alnoides | Buch.-Ham. ex D.Don | 17 | documented |
| Betula michauxii | Spach | 15 | documented |
| Betula costata | Trautv. | 11 | documented |
| Betula utilis | D.Don | 11 | documented |
| Betula intermedia | (Hartm.) E.Thomas ex Gaudin | 5 | documented |
| Betula maximowicziana | Regel | 4 | documented |
| Betula microphylla | Bunge | 4 | documented |
| Betula grossa | Siebold & Zucc. | 3 | documented |
| Betula schmidtii | Regel | 2 | below the evidence gate |
| Betula tianschanica | Rupr. | 2 | below the evidence gate |
| Betula × bottnica | Mela | 0 | below the evidence gate |
| Betula × caerulea | Blanch. | 0 | below the evidence gate |
| Betula × dosmannii | McAll. | 0 | below the evidence gate |
| Betula × dugleana | Lepage | 0 | below the evidence gate |
| Betula × dutillyi | Lepage | 0 | below the evidence gate |
| Betula × eastwoodiae | Sarg. | 0 | below the evidence gate |
| Betula × hornei | E.J.Butler | 0 | below the evidence gate |
| Betula × jackii | C.K.Schneid. | 0 | below the evidence gate |
| Betula × purpusii | C.K.Schneid. | 0 | below the evidence gate |
| Betula × raymundii | Lepage | 0 | below the evidence gate |
| Betula × sandbergii | Britton | 0 | below the evidence gate |
| Betula × sargentii | Dugle | 0 | below the evidence gate |
| Betula × uliginosa | Dugle | 0 | below the evidence gate |
| Betula × utahensis | Dugle | 0 | below the evidence gate |
| Betula × utahensis | Britton | 0 | below the evidence gate |
| Betula × vologdensis | Tzvelev | 0 | below the evidence gate |
| Betula × winteri | Dugle | 0 | below the evidence gate |
| Betula apoiensis | Nakai | 0 | below the evidence gate |
| Betula ashburneri | McAll. & Rushforth | 0 | below the evidence gate |
| Betula aurata | Borkh. | 0 | below the evidence gate |
| Betula avatshensis | Kom. | 0 | below the evidence gate |
| Betula baschkirica | Tzvelev | 0 | below the evidence gate |
| Betula bomiensis | P.C.Li | 0 | below the evidence gate |
| Betula calcicola | (W.W.Sm.) P.C.Li | 0 | below the evidence gate |
| Betula celtiberica | Rothm. & Vasc. | 0 | below the evidence gate |
| Betula chichibuensis | H.Hara | 0 | below the evidence gate |
| Betula chinensis | Maxim. | 0 | below the evidence gate |
| Betula coriaceifolia | V.N.Vassil. | 0 | below the evidence gate |
| Betula corylifolia | Regel & Maxim. | 0 | below the evidence gate |
| Betula cylindrostachya | Wall. | 0 | below the evidence gate |
| Betula dahurica | Pall. | 0 | below the evidence gate |
| Betula delavayi | Franch. | 0 | below the evidence gate |
| Betula falcata | V.N.Vassil. | 0 | below the evidence gate |
| Betula fargesii | Franch. | 0 | below the evidence gate |
| Betula globispica | Shirai | 0 | below the evidence gate |
| Betula gmelinii | Bunge | 0 | below the evidence gate |
| Betula gynoterminalis | Y.C.Hsu & C.J.Wang | 0 | below the evidence gate |
| Betula hainanensis | J.Zeng, B.Q.Ren, J.Y.Zhu & Z.D.Chen | 0 | below the evidence gate |
| Betula heptopotamica | V.N.Vassil. | 0 | below the evidence gate |
| Betula honanensis | S.Y.Wang & C.L.Chang | 0 | below the evidence gate |
| Betula hornei | B.T.Butler | 0 | below the evidence gate |
| Betula karagandensis | V.N.Vassil. | 0 | below the evidence gate |
| Betula klokovii | Zaver. | 0 | below the evidence gate |
| Betula kweichowensis | Hu | 0 | below the evidence gate |
| Betula luminifera | H.J.P.Winkl. | 0 | below the evidence gate |
| Betula medwediewii | Regel | 0 | below the evidence gate |
| Betula megrelica | Sosn. | 0 | below the evidence gate |
| Betula minor | (Tuck.) Fernald | 0 | below the evidence gate |
| Betula minor | Auth. | 0 | below the evidence gate |
| Betula paramushirensis | Barkalov | 0 | below the evidence gate |
| Betula plettkei | Junge | 0 | below the evidence gate |
| Betula potamophila | V.N.Vassil. | 0 | below the evidence gate |
| Betula potaninii | Batalin | 0 | below the evidence gate |
| Betula psammophila | V.N.Vassil. | 0 | below the evidence gate |
| Betula raddeana | Trautv. | 0 | below the evidence gate |
| Betula saksarensis | Polozhij & A.T.Malzeva | 0 | below the evidence gate |
| Betula saviczii | V.N.Vassil. | 0 | below the evidence gate |
| Betula skvortsovii | McAll. & Ashburner | 0 | below the evidence gate |
| Betula sunanensis | Y.J.Zhang | 0 | below the evidence gate |
| Betula wuyiensis | J.B.Xiao | 0 | below the evidence gate |
| Betula zabelii | (Dippel) Dippel & Schelle | 0 | below the evidence gate |
| Betula zinserlingii | V.N.Vassil. | 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.