This name is a synonym of Mentha × maximilianea F.W.Schultz.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 125296) with original publication details: Cat. Pl. Vasc. Baléares 335 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:451071-1.
This name was in version 1 of The Plant List, record kew-125296.