This name is a synonym of Nenga pumila var. pachystachya (Blume) Fernando.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 133563) with original publication details: Malesia 3: 183 1889.
This name was in version 1 of The Plant List, record kew-133563, and has not been changed.