This name is a synonym of Vicia amoena var. sericea Kitag..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13066752) with original publication details: Clav. Pl. Chin. Bor.-Orient. 192 1959.
This name was in version 1 of The Plant List, record tro-13066752.