This name is a synonym of Phymosia umbellata (Cav.) Kearney.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19603195) with original publication details: Icon. 1: 64, t. 95 1791.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:561964-1.
This name was in version 1 of The Plant List, record tro-19603195.