This name is a synonym of Haplopappus parvifolius (DC.) Gay.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record DD6A7F17-102C-4CC0-934E-4AD41AEB9E07) 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:23897-2.
This name was in version 1 of The Plant List, record gcc-40364, and has not been changed.