This name is a synonym of Endostemon gracilis (Benth.) M.R.Ashby.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 136917) with original publication details: Labiat. Gen. Spec. 12 1832.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:452965-1.
This name was in version 1 of The Plant List, record kew-136917, and has not been changed.