This name is a synonym of Haplopappus pedunculosus J.Rémy.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 7C904E61-8642-4DA8-8CFF-653A6BE57269) 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:23914-2.
This name was in version 1 of The Plant List, record gcc-76689, and has not been changed.