This name is a synonym of Cerastium velutinum var. villosissimum (Pennell) J.K.Morton.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bartonia 12: 11 1931.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:52306-2.
This name was in version 1 of The Plant List, record kew-2710003, and has not been changed.