This name is a synonym of Prosartes trachycarpa S.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 292994) with original publication details: Fl. Bor.-Amer. 2: 174 1838.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:261754-2.
This name was in version 1 of The Plant List, record kew-292994.