This name is a synonym of Porteresia coarctata (Roxb.) Tateoka.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 426614) with original publication details: Fl. Ind. ed. 1832 2: 206 1832.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:327885-2.
This name was in version 1 of The Plant List, record kew-426614, and has not been changed.