This name is a synonym of Mentha longifolia (L.) L..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 124628) with original publication details: Bol. Soc. Ibér. Ci. Nat. 33: 209 1934 publ. 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:450421-1.
This name was in version 1 of The Plant List, record kew-124628.