This name is a synonym of Pycreus macrostachyos (Lam.) J.Raynal.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 9902515) with original publication details: Hortus Maurit. 380 1837.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:304453-1.
This name was in version 1 of The Plant List, record tro-9902515.