This name is a synonym of Helosis cayennensis (Sw.) Spreng..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 3000056) with original publication details: Fl. Bras. 4(2): 23, t. 5, f. 1 1869.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:119962-2.
This name was in version 1 of The Plant List, record tro-3000056.