This name is a synonym of Gomphostemma parviflorum var. farinosum Prain.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 17605928) with original publication details: Rec. Bot. Surv. India 14(1): 288 1940.
This name was in version 1 of The Plant List, record tro-17605928.