This name is a synonym of Ruilopezia jahnii (Standl.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record C643AA62-4F80-4098-AEC0-CC177A0AA096) with original publication details: Amer. J. Bot. 2 479 1915.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:97700-2.
This name was in version 1 of The Plant List, record gcc-122470, and has not been changed.