This name is a synonym of Helianthemum scoparium Nutt. ex Torr. & A. Gray.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100001140) with original publication details: Proc. Calif. Acad. Sci. 3: 42 1863.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:544763-1.
This name was in version 1 of The Plant List, record tro-100001140.