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black cottonwood

   Also found in: Wikipedia 0.02 sec.
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Noun1.black cottonwood - North American poplar with large rounded scalloped leaves and brownish bark and wood
downy poplar, Populus heterophylla, swamp cottonwood, swamp poplar
cottonwood - any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed
2.black cottonwoodblack cottonwood - cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath
Populus trichocarpa, Western balsam poplar
cottonwood - any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed


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Decoded Notable genomes unveiled this year included those of the insect-gut bacterium Carsonella ruddii, the smallest yet (170: 285); the black cottonwood, the first from a tree (170; 180); and the western honeybee, the first from an ultrasocial animal with a strictly stratified society (170: 275 *).
Science news of the year by Miller, Julie Ann / Science News
Bigleaf maple can form pure stands along streams, and forms a component of mixed forests including Douglas-fir, Sitka spruce, western hemlock, redwood, black cottonwood, willows, alders, ash, aspen, willows and a variety of western oaks and pines.
A realm of American originals: three hundred years after the Voyage ... by Lantz, Gary / American Forests
Tuskan and scientists from 34 institutions around the world joined forces to sequence the black cottonwood (Populus trichocarpa) genome.
Family tree: an arboreal genome is sequenced by Brownlee, C. / Science News
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