This name is a synonym of Isolepis fluitans (L.) R.Br..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 250294) with original publication details: Bot. Not. 127: 522 1974.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:879726-1.
This name was in version 1 of The Plant List, record kew-250294.