This name is a synonym of Murbeckiella zanonii (Ball) Rothm..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100358958) with original publication details: Revista Facultad Ci. Nat. Salta 2: 935 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285305-1.
This name was in version 1 of The Plant List, record tro-100358958, and has not been changed.