Details for: Betula pubescens subsp. callosa
2 different source(s) use this name:

- Govaerts, R. & Frodin, D. G. 1998: World Checklist and Bibliography of Fagales. RBG Kew.
- Vascular Plants of Russia and Adjacent Countries as of 26.10.96

Source: Govaerts, R. & Frodin, D. G. 1998: World Checklist and Bibliography of Fagales. RBG Kew. [IOPI preferred view]
Name: Betula pubescens subsp. callosa (Notř) Á.Löve & D.Löve
Nomencl. ref. in ?,
Rank: Subspecies
Status: SYNONYM
Synonym of: Betula pubescens Betula pubescens Ehrh. var. pubescens var. pubescens
Taxon Notes:
 
SourceStatusDesignation: S

Source: Vascular Plants of Russia and Adjacent Countries as of 26.10.96
Name: Betula pubescens subsp. callosa (Noto>! ex Lindq.) A
Nomencl. ref. 140 (1956)
Rank: Subspecies
Status: SYNONYM
Synonym of: Betula callosa Noto>! ex Lindq.
 
SourceStatusDesignation: S