This name is a synonym of Syncolostemon transvaalensis (Schltr.) D.F.Otieno.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 137146) with original publication details: Bot. Jahrb. Syst. 26: 79 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:453168-1.
This name was in version 1 of The Plant List, record kew-137146, and has not been changed.