Spade shaped leaves, with minimal serration on the edges.
Somewhat flat petiole, bark grey green as I recall, certainly not white. Light underside of leaf but not extremely so.
A large deciduous tree with spade shaped leaves and furrowed grey bark. Thick, alternate leaf pattern. Likes moist environments. It has sticky resin in the buds.
Populus is a genus of 25–35 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar /ˈpɒp.lər/, aspen, and cottonwood.