This name is a synonym of Libanothamnus arboreus (Aristeg.) Cuatrec..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 5B851AC2-F60D-4748-9F9F-49BCD1FCEBDC) with original publication details: Bol. Soc. Venez. Ci. Nat. 20 286 1959.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:97619-2.
This name was in version 1 of The Plant List, record gcc-39742, and has not been changed.