This name is a synonym of Mosiera nummularioides (Britton & P.Wilson) Bisse.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 166846) with original publication details: Mem. Torrey Bot. Club 16: 85 1920.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:283925-2.
This name was in version 1 of The Plant List, record kew-166846, and has not been changed.