This name is a synonym of Erioneuron avenaceum var. grandiflorum (Vasey) Gould.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 447225) with original publication details: Bull. New Mexico Agric. Exp. Sta. 81: 129 1912.
This name was in version 1 of The Plant List, record kew-447225, and has not been changed.