This name is a synonym of Betula minor (Tuck.) Fernald.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 376521) with original publication details: Acta Horti Gothob. 20: 140 1956.
This name was in version 1 of The Plant List, record kew-376521, and has not been changed.