⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-21732, and has not been changed.
This name is a synonym of Betula nana subsp. exilis (Sukaczev) Hultén.
The record derives from WCSP which reports it as a synonym (record 21732) with original publication details: Bot. Bull. Acad. Sin. 2: 218 1948.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:107896-1.