This name is a synonym of Arctostaphylos oppositifolia Parry.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name with original publication details: Rep. U.S. Mex. Bound. 2(1): 108 1858.
This name was in version 1 of The Plant List, record kew-2647330.