This name is a synonym of Haplopappus marginalis Phil..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 82997FF9-325B-46B2-9054-4D73A2620F4E) 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:23741-2.
This name was in version 1 of The Plant List, record gcc-41822.