This name is a synonym of Lemna minuta Kunth.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 109310) with original publication details: Revista Sudamer. Bot. 9: 185 1954.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:137289-2.
This name was in version 1 of The Plant List, record kew-109310.