This name is a synonym of Populus ciliata var. weixii C. Wang & S.L. Tung.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50093992) with original publication details: J. Wuhan Bot. Res. 9(3): 235 1991.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:967071-1.
This name was in version 1 of The Plant List, record tro-50093992, and has not been changed.