This name is a synonym of Xylorhiza orcuttii (Vasey & Rose) Greene.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 4DAE038A-1A82-42CB-B8F3-35EC1763CA68) with original publication details: Bot. Gaz. 16 113 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23870-2.
This name was in version 1 of The Plant List, record gcc-29171, and has not been changed.