This name is a synonym of Poa supina Schrad..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 437427) with original publication details: Acta Bot. Acad. Sci. Hung. 17: 118 1971 publ. 1972.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:882862-1.
This name was in version 1 of The Plant List, record kew-437427.