This name is a synonym of Cryptantha pusilla (Torr. & A.Gray) Greene.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50092845) with original publication details: Proc. Amer. Acad. Arts 20: 274 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:117445-1.
This name was in version 1 of The Plant List, record tro-50092845, and has not been changed.