This name is a synonym of Sclerocarpus uniserialis var. frutescens (Brandegee) Feddema.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 212A0D90-90BA-4D73-BBB7-E5BB80B438DF) with original publication details: 281 1912.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:230787-2.
This name was in version 1 of The Plant List, record gcc-133546, and has not been changed.