This name is a synonym of Echinodorus paniculatus Micheli.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 276579) with original publication details: Bull. Herb. Boissier II, 3: 1031 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:88199-2.
This name was in version 1 of The Plant List, record kew-276579.