This name is a synonym of Haplopappus integerrimus (Hook. & Arn.) H.M.Hall.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 3C88D5BD-5ABA-4CF0-B278-CDC4DAD6035C) 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:23024-2.
This name was in version 1 of The Plant List, record gcc-123196.