This name is a synonym of Ruilopezia viridis (Aristeg.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 35E7B1A6-C8C1-4E78-AF3F-F12F9CD3B9C9) with original publication details: Bol. Soc. Venez. Ci. Nat. 20 279 1959.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:97797-2.
This name was in version 1 of The Plant List, record gcc-138699, and has not been changed.