This name is a synonym of Thonningia sanguinea Vahl.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 3000048) with original publication details: Bull. Misc. Inform. Kew 1911: 152 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:103411-1.
This name was in version 1 of The Plant List, record tro-3000048, and has not been changed.