This name is a synonym of Commelina nigritana var. gambiae (C.B.Clarke) Brenan.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 233907) with original publication details: Monogr. Phan. 3: 146 1881.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:172067-1.
This name was in version 1 of The Plant List, record kew-233907, and has not been changed.