This name is a synonym of Paspalum hirsutum Retz..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 431608) with original publication details: Bot. Mag. (Tokyo) 36: 115 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:414171-1.
This name was in version 1 of The Plant List, record kew-431608, and has not been changed.