This name is a synonym of Matudanthus nanus (M.Martens & Galeotti) D.R.Hunt.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 270432) with original publication details: Anales Inst. Biol. Univ. Nac. Autón. México, Bot. 43: 58 1972.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:173453-1.
This name was in version 1 of The Plant List, record kew-270432, and has not been changed.