This name is a synonym of Haplopappus rigidus Phil..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 11C86586-8F95-4BEA-9E0A-B7C5227C1F7B) with original publication details: Revis. Gen. Pl. 1 315 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23097-2.
This name was in version 1 of The Plant List, record gcc-113510, and has not been changed.