This name is a synonym of Betula lanata (Regel) V.N.Vassil..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 21803) with original publication details: Bot. Zhurn. S.S.S.R. 27: 12 1942.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:107925-1.
This name was in version 1 of The Plant List, record kew-21803, and has not been changed.