⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50318365, and has not been changed.
This name is a synonym of Betula nana subsp. exilis (Sukaczev) Hultén.
The record derives from Tropicos which reports it as a synonym (record 50318365) with original publication details: Rhodora 17: 87 87 1915.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:32142-2.