This name is a synonym of Phragmites australis (Cav.) Trin. ex Steud..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 433928) with original publication details: Acta Bot. Acad. Sci. Hung. 23: 389 1977 publ. 1978.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:882701-1.
This name was in version 1 of The Plant List, record kew-433928.