| Betula adasii Egorova & Sipliv. |
wfo-0000330298 |
| Betula baicalensis f. obscura Popov |
wfo-0001322512 |
| Betula baicalensis Sukaczev |
wfo-0000331289 |
| Betula baicalensis Sukaczev |
wfo-0001274147 |
| Betula barguzinensis Popov |
wfo-0000331320 |
| Betula cyclophylla Nakai |
wfo-0000332039 |
| Betula divaricata Ledeb. |
wfo-0000332353 |
| Betula evenkiensis Polozhij |
wfo-0000332583 |
| Betula extremiorientalis Kuzen. & V.N.Vassil. |
wfo-0000332650 |
| Betula fruticosa subsp. fusca (Pall. ex Georgi) Shemberg |
wfo-0000332810 |
| Betula fruticosa subsp. ruprechtiana (Trautv.) Kitag. |
wfo-0000332877 |
| Betula fruticosa var. fusenensis (Nakai) Liou |
wfo-0000909122 |
| Betula fruticosa var. gmelinii (Bunge) Regel |
wfo-0000332830 |
| Betula fruticosa var. macrostachys S.L.Tung |
wfo-0000332840 |
| Betula fruticosa var. ovalifolia (Rupr.) S.L.Tung |
wfo-0000332850 |
| Betula fruticosa var. paishanensis (Nakai) S.L.Tung |
wfo-0000332858 |
| Betula fruticosa var. ruprechtiana Trautv. |
wfo-0000332867 |
| Betula fruticosa Willd. |
wfo-0000332778 |
| Betula fusca Pall. ex Georgi |
wfo-0000332888 |
| Betula fusenensis Nakai |
wfo-0000332899 |
| Betula gmelinii var. zyzyphifolia (Z.Wang & S.L.Tung) G.H.Liu & E.W.Ma |
wfo-0000333094 |
| Betula henriettae Sukaczev & V.N.Vassil. |
wfo-0000333301 |
| Betula humilis var. kamtschatica Regel |
wfo-0000840890 |
| Betula humilis var. ovalifolia (Rupr.) Regel |
wfo-0000333430 |
| Betula humilis var. palustris J.F.Gmel. |
wfo-0000333441 |
| Betula humilis var. reticulata (Rupr.) Regel |
wfo-0000333452 |
| Betula humilis var. tatewakiana (M.Ohki & S.Watan.) Murata |
wfo-0000333485 |
| Betula itelmenorum V.N.Vassil. |
wfo-0000333649 |
| Betula middendorffii Trautv. & C.A.Mey. |
wfo-0000334564 |
| Betula middendorffii var. communis Trautv. ex Regel |
wfo-0000840886 |
| Betula middendorffii var. globosa Regel |
wfo-0000840888 |
| Betula middendorffii var. henriettae Popov |
wfo-0001385189 |
| Betula middendorffii var. nitida Regel |
wfo-0000840887 |
| Betula ovalifolia Rupr. |
wfo-0000335069 |
| Betula paishanensis Nakai |
wfo-0000335129 |
| Betula pseudomiddendorffii V.N.Vassil. |
wfo-0000335955 |
| Betula reticulata Rupr. |
wfo-0000336578 |
| Betula rotundifolia Regel & Tiling |
wfo-0000336694 |
| Betula substepposa V.N.Vassil. |
wfo-0000337109 |
| Betula tatewakiana M.Ohki & S.Watan. |
wfo-0000337196 |
| Betula turfosa Weigel. ex Rchb. |
wfo-0000337401 |
| Betula yoshimurae Miyabe & Tatew. |
wfo-0000338021 |
| Betula zyzyphifolia Z.Wang & S.L.Tung |
wfo-0000338050 |