| Betula alleghaniensis Britton |
Accepted |
42 |
| Betula alnoides B. -Ham. ex D. Don |
Accepted |
14 |
| Betula callosa Lindq. |
Accepted |
28 |
| Betula cylindrostachya Lindl. ex Wall. |
Accepted |
14 |
| Betula dahurica Pall. |
Accepted |
28 |
| Betula delavayi Franch. |
Accepted |
28 |
| Betula divaricata Ledeb. |
Accepted |
24 |
| Betula ermanii Cham. |
Accepted |
28 |
| Betula fruticosa Pall. |
Accepted |
14 |
| Betula glandulosa Michx. |
Accepted |
14 |
| Betula grossa Siebold & Zucc. |
Accepted |
42 |
| Betula humilis Schrank |
Accepted |
14 |
| Betula kenaica W. H. Evans |
Accepted |
35 |
| Betula lenta L. |
Accepted |
14 |
| Betula litwinowii Doluch. |
Accepted |
28 |
| Betula luminifera H. J. P. Winkl. |
Accepted |
14 |
| Betula maximowicziana Regel |
Accepted |
14 |
| Betula microphylla Bunge |
Accepted |
28 |
| Betula minor (Tuck.) Fernald |
Accepted |
28 |
| Betula nana L. |
Accepted |
14 |
| Betula nana subsp. exilis (Sukaczev) Hultén |
Accepted |
14 |
| Betula nana subsp. rotundifolia (Spach) Malyschev |
Accepted |
14 |
| Betula neoalaskana Sarg. |
Accepted |
14 |
| Betula nigra L. |
Accepted |
14 |
| Betula occidentalis Hook. |
Accepted |
14 |
| Betula ovalifolia Rupr. |
Accepted |
28 |
| Betula papyrifera Marshall |
Accepted |
35 |
| Betula pendula Roth |
Accepted |
14 |
| Betula platyphylla Sukaczev |
Accepted |
14 |
| Betula populifolia Marshall |
Accepted |
14 |
| Betula pubescens Ehrh. |
Accepted |
28 |
| Betula pumila L. |
Accepted |
28 |
| Betula raddeana Trautv. |
Accepted |
14 |
| Betula schmidtii Regel |
Accepted |
28 |
| Betula utilis D. Don |
Accepted |
28 |
| Betula × caerulea Blanch. |
Accepted |
14 |
| Betula × murrayana B. V. Barnes & Dancik |
Accepted |
56 |
| Betula × sargentii Dugle |
Accepted |
24 |
| Betula × winteri Dugle |
Accepted |
35 |
| Betula carelica Merk. |
Unresolved |
14 |
| Betula cylindrostachys Wall. ex Diels |
Unresolved |
14 |
| Betula × utahensis Dugle |
Unresolved |
31 |
| Betula lutea F. Michx. |
Synonym of Betula alleghaniensis Britton |
42 |
| Betula dahurica |
Synonym of Betula dahurica Pall. |
28 |
| Betula middendorffii Trautv. & C. A. Mey. |
Synonym of Betula divaricata Ledeb. |
24 |
| Betula rotundifolia Regel & Tiling |
Synonym of Betula divaricata Ledeb. |
24 |
| Betula paraermanii V. N. Vassil. |
Synonym of Betula ermanii Cham. |
28 |
| Betula extremiorientalis Kuzen. & V. N. Vassil. |
Synonym of Betula fruticosa Pall. |
14 |
| Betula glandulosa var. glandulosa |
Synonym of Betula glandulosa Michx. |
14 |
| Betula pubescens subsp. minor (Tuck.) Á. Löve & D. Löve |
Synonym of Betula minor (Tuck.) Fernald |
28 |
| Betula nana subsp. nana |
Synonym of Betula nana L. |
14 |
| Betula exilis Sukaczev |
Synonym of Betula nana subsp. exilis (Sukaczev) Hultén |
14 |
| Betula glandulosa var. rotundifolia (Spach) Regel |
Synonym of Betula nana subsp. rotundifolia (Spach) Malyschev |
14 |
| Betula rotundifolia Spach |
Synonym of Betula nana subsp. rotundifolia (Spach) Malyschev |
14 |
| Betula resinifera Britton |
Synonym of Betula neoalaskana Sarg. |
14 |
| Betula fontinalis Sarg. |
Synonym of Betula occidentalis Hook. |
14 |
| Betula papyrifera var. occidentalis (Hook.) Sarg. |
Synonym of Betula occidentalis Hook. |
14 |
| Betula papyrifera var. macrostachya Fernald |
Synonym of Betula papyrifera Marshall |
35 |
| Betula cordifolia Regel |
Synonym of Betula papyrifera var. cordifolia (Regel) Regel |
14 |
| Betula cajanderi Sukaczev |
Synonym of Betula pendula Roth |
14 |
| Betula pendula var. pendula |
Synonym of Betula pendula Roth |
14 |
| Betula verrucosa Ehrh. |
Synonym of Betula pendula Roth |
14 |
| Betula verrucosa subsp. fallax Kindb. |
Synonym of Betula pendula Roth |
14 |
| Betula cycoviensis Steud. |
Synonym of Betula pendula var. oycowiensis (Besser) Dippel |
14 |
| Betula oycowiensis Besser |
Synonym of Betula pendula var. oycowiensis (Besser) Dippel |
14 |
| Betula platyphylla var. japonica (Miq.) Hara |
Synonym of Betula platyphylla Sukaczev |
14 |
| Betula mandshurica (Regel) Nakai |
Synonym of Betula platyphylla subsp. mandshurica (Regel) Kitag. |
14 |
| Betula alba L. |
Synonym of Betula pubescens Ehrh. |
28 |
| Betula celtiberica Rothm. & Vasc. |
Synonym of Betula pubescens Ehrh. |
28 |
| Betula pubescens |
Synonym of Betula pubescens Ehrh. |
28 |
| Betula pubescens None |
Synonym of Betula pubescens Ehrh. |
28 |
| Betula carpatica Waldst. & Kit. ex Willd. |
Synonym of Betula pubescens var. glabrata Wahlenb. |
28 |
| Betula pubescens subsp. carpatica (Waldst. & Kit.) Asch. & Graebn. |
Synonym of Betula pubescens var. glabrata Wahlenb. |
28 |
| Betula pubescens subsp. tortuosa (Ledeb.) Nyman |
Synonym of Betula pubescens var. pumila (L.) Govaerts |
28 |
| Betula tortuosa Ledeb. |
Synonym of Betula pubescens var. pumila (L.) Govaerts |
28 |
| Betula glandulifera (Regel) E. J. Butler |
Synonym of Betula pumila L. |
28 |
| Betula pubescens subsp. borealis (Spach) Á. Löve & D. Löve |
Synonym of Betula pumila L. |
28 |
| Betula pumila subsp. glandulifera (Regel) Á. Löve & D. Löve |
Synonym of Betula pumila L. |
28 |
| Betula pumila var. glandulifera Regel |
Synonym of Betula pumila L. |
28 |
| Betula pendula var. obscura (Kotula) Olavská |
Synonym of Betula × aurata Borkh. |
14 |
| Betula × caerulea-grandis Blanch. |
Synonym of Betula × caerulea Blanch. |
14 |
| Betula × murrayana |
Synonym of Betula × murrayana B. V. Barnes & Dancik |
56 |
| Betula × winteri D. (X) |
Synonym of Betula × winteri Dugle |
35 |
