This name is a synonym of Herrickia glauca var. pulchra (S.F.Blake) Brouillet.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 42D86597-0CBF-45B8-A3BA-1D172CBE0DD0) with original publication details: Proc. Biol. Soc. Wash. 35 174 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:23494-2.
This name was in version 1 of The Plant List, record gcc-15711, and has not been changed.