This name is a synonym of Anemone deltoidea Douglas.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 27103222) with original publication details: Folia Geobot. Phytotax. 11: 81 1976.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:13533-2.
This name was in version 1 of The Plant List, record tro-27103222, and has not been changed.