This name is a synonym of Mentzelia hispida Willd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50195530) with original publication details: Contr. W. Bot. 18: 60 1933.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:315688-2.
This name was in version 1 of The Plant List, record tro-50195530.