This name is a synonym of Lobelia rubescens De Wild..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 353375) with original publication details: Fl. W. Trop. Afr. 2: 191 1931.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:143439-1.
This name was in version 1 of The Plant List, record kew-353375, and has not been changed.