This name is a synonym of Monanthes brachycaulos (Webb & Bertholt) R. Lowe.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8902975) with original publication details: Bol. Inst. Nac. Invest. Agron. 15(79): 188 1946.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:274591-1.
This name was in version 1 of The Plant List, record tro-8902975, and has not been changed.