The genus Populus has traditionally been divided into six sections on the basis of leaf and flower characters. These are: Populus section Populus – aspens and White Poplar, Populus section Aigeiros – black poplars, some of the cottonwoods, Populus section Tacamahaca – balsam poplars, Populus section Leucoides – necklace poplars or bigleaf poplars, Populus section Turanga – subtropical poplars, Populus section Abaso – Mexican poplars.
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news.xinhuanet.com fossilcreeknursery.com treenames.net teline.fr fineartamerica.com
fantom-xp.com wallpaperswide.com grandcanyon.free.fr digital-images.net
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