This name is a synonym of Isoetes echinospora Durieu.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26613023).
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:30374630-2.
This name was in version 1 of The Plant List, record tro-26613023.