genus of plants

Populus is a genus of 25–30 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 , aspen, and cottonwood. The western balsam poplar (P. trichocarpa) was the first tree whose full DNA code had been determined by DNA sequencing, in 2006.
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main subject: Populus

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