This name is a synonym of Anticlea elegans (Pursh) Rydb..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 299845) with original publication details: Muhlenbergia 6: 12 1910.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:15847-2.
This name was in version 1 of The Plant List, record kew-299845.