This name is a synonym of Stellaria decumbens var. polyantha Edgew..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50113658) with original publication details: Kew Bull. 29: 443 1974.
This name was in version 1 of The Plant List, record tro-50113658, and has not been changed.