This name is a synonym of Populus afghanica var. tajikistanica (Kom.) C. Wang & Chang Y. Yang.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 28301362) with original publication details: Bot. Zhurn. SSSR 19: 509, f. 2 1934.
This name was in version 1 of The Plant List, record tro-28301362, and has not been changed.