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 8EC27146-F19D-49FA-9B6B-02033E150CAF) with original publication details: Revis. Gen. Pl. 1 318 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23335-2.
This name was in version 1 of The Plant List, record gcc-1093, and has not been changed.