This name is a synonym of Xylorhiza tortifolia (Torr. & A.Gray) Greene.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 165F7312-A912-4CD5-9CAA-E7C1F4FAEC3D) with original publication details: Bot. Gaz. 37: 270. 1904 270 1904.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:269868-2.
This name was in version 1 of The Plant List, record gcc-134412.