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 350292) with original publication details: Exsicc. (Herb. Norm.) 2: 116 1838.
This name was in version 1 of The Plant List, record kew-350292.