| Betula alba f. hornemannii (Regel) Regel |
wfo-0000909116 |
| Betula alba subsp. pubescens (Ehrh.) Regel |
wfo-0000330752 |
| Betula alba var. friesii Regel |
wfo-0000330498 |
| Betula alba var. hornemannii Regel |
wfo-0000330528 |
| Betula alba var. lupulina Wallr. |
wfo-0000807381 |
| Betula alba var. ovata Neilr. |
wfo-0000330653 |
| Betula alba var. pubescens (Ehrh.) Spach |
wfo-0000330741 |
| Betula alba var. vulgaris Willd. |
wfo-0000330859 |
| Betula concinna Gunnarsson |
wfo-0000331862 |
| Betula friesii Larss. |
wfo-0000332757 |
| Betula friesii var. oxyodontia Kindb. |
wfo-0000923476 |
| Betula friesii var. subalpina Larss. ex Kindb. |
wfo-0000923475 |
| Betula laciniata Blom |
wfo-0000334010 |
| Betula lucida Courtois |
wfo-0000803857 |
| Betula odorata var. alpigena Blytt |
wfo-0000335058 |
| Betula pubescens f. pendula Schelle |
wfo-0000838827 |
| Betula pubescens subsp. callosa (Notø) Á.Löve & D.Löve |
wfo-0000336015 |
| Betula pubescens subsp. concinna (Gunnarsson) Á.Löve & D.Löve |
wfo-0000336071 |
| Betula pubescens subsp. nigricans Maire ex Just |
wfo-0000336171 |
| Betula pubescens subsp. ovalifolia (Sukaczev) Printz |
wfo-0000806967 |
| Betula pubescens subsp. subarctica (Orlova) Á.Löve & D.Löve |
wfo-0000336275 |
| Betula pubescens subsp. suecica Gunnarsson |
wfo-0000336286 |
| Betula pubescens var. cryptocarpa Laest. |
wfo-0000332018 |
| Betula pubescens var. friesii (Larss. ex Hartm.) Nyman |
wfo-0000802443 |
| Betula pubescens var. glabra Fiek ex C.K.Schneid. |
wfo-0000336110 |
| Betula pubescens var. lucida (Courtois) Wesm. |
wfo-0000803856 |
| Betula pubescens var. media Laest. |
wfo-0000334459 |
| Betula pubescens var. megalocarpa Laest. |
wfo-0000334480 |
| Betula pubescens var. nigricans (Wender.) Nyman |
wfo-0000802442 |
| Betula pubescens var. oblongifolia Wimm. |
wfo-0000336181 |
| Betula pubescens var. ovalifolia Sukaczev |
wfo-0000336203 |
| Betula pubescens var. palmiformis Laest. |
wfo-0000335143 |
| Betula pubescens var. rustica Laest. |
wfo-0000336753 |
| Betula pubescens var. sibakademica Baran. |
wfo-0000336255 |
| Betula pubescens var. silvatica Laest. |
wfo-0000336987 |
| Betula pubescens var. silvestris Laest. |
wfo-0000336997 |
| Betula pubescens var. subaequalis Laest. |
wfo-0000337056 |
| Betula pubescens var. subalpina Laest. |
wfo-0000337066 |
| Betula pubescens var. vestita Gren. & Godr. |
wfo-0000336329 |