This name is a synonym of Ruilopezia floccosa (Standl.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record ADB37B6A-9D37-4D8B-8790-DCCD4DD6AC22) with original publication details: Amer. J. Bot. 2 481 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:97667-2.
This name was in version 1 of The Plant List, record gcc-129668, and has not been changed.