This name is a synonym of Mentzelia parvifolia Urb. & Gilg ex Kurtz.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50088138) with original publication details: Bull. Torrey Bot. Club 25(4): 199 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:157489-2.
This name was in version 1 of The Plant List, record tro-50088138, and has not been changed.