This name is a synonym of Cryptantha diffusa (Phil.) I.M.Johnst..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Linnaea 33: 191 1864.
This name was in version 1 of The Plant List, record kew-2797727, and has not been changed.