This name is a synonym of Populus schneideri (Rehder) N. Chao.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 28300962) with original publication details: J. Arnold Arbor. 12(1): 63 1931.
This name was in version 1 of The Plant List, record tro-28300962, and has not been changed.