This name is a synonym of Betula utilis var. jacquemontii (Spach) H.J.P.Winkl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 21400) with original publication details: Ann. Sci. Nat., Bot. II, 15: 189 1841.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:295114-1.
This name was in version 1 of The Plant List, record kew-21400, and has not been changed.