Noun
Populus alba, a poplar found in Central Europe, Morocco and central Asia.
Synonyms: abele, silver poplar
Coordinate term: black poplar
The bigtooth aspen, Populus grandidentata.
The American aspen, Populus tremuloides.
Synonyms: American aspen, trembling aspen, quaky tree, quaky aspen, mountain aspen, golden aspen, quaking aspen, trembling poplar
The Chinese white poplar, Populus tomentosa.
Source: en.wiktionary.org