This name is a synonym of Proboscidea triloba (Schltdl. & Cham.) Decne..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19900039) with original publication details: Linnaea 5: 121 1830.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:675867-1.
This name was in version 1 of The Plant List, record tro-19900039.