This name is a synonym of Merremia yunnanensis var. pallescens (C.Y. Wu) R.C. Fang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8502878) with original publication details: Fl. Rep. Trop. Subtrop. Yunnan 1: 120, pl. 36, 1 1965.
This name was in version 1 of The Plant List, record tro-8502878, and has not been changed.