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Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen. It is commonly called quaking aspen , [ 2 ] [ 3 ] [ 4 ] trembling aspen , [ 2 ] [ 3 ] American aspen , [ 3 ] mountain or golden aspen , [ 5 ] trembling poplar , [ 5 ] white poplar , [ 5 ] and popple , [ 5 ...
The Crooked Trees, Crooked Bush, Twisted Trees, or the Crooked Trees of Alticane are a 3-acre (1.2 ha) [1] grove of deformed trembling aspen trees of type Populus tremuloides Michx. found in the Canadian province of Saskatchewan.
It can be distinguished from the closely related North American Populus tremuloides, which is nearly identical, by the leaves being more coarsely toothed. [6] Like other aspens, it spreads extensively by suckers (root sprouts), which may be produced up to 40 m from the parent tree, forming extensive clonal colonies.
Systems of classification used to define large trees vary considerably, leading to some confusion about Pando's status. Within the United States, the Official Register of Champion Trees defines the largest trees in a species-specific way; in this case, Pando is the largest aspen tree (Populus tremuloides). In forestry, the largest trees are ...
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 (/ ˈ p ɒ p l ər /), aspen, and cottonwood.
Quaking aspen (Populus tremuloides) is the predominant species in aspen stands in the Great Lakes region, but bigtooth aspen dominates on drier, upland sites. Aspen stands dominated by bigtooth aspens are generally more open than those dominated by quaking aspens. It is more disease resistant than P. tremuloides.
The depth of the sequencing was about 7.5 x (meaning that each base pair was sequenced on average 7.5 times). Genome annotation was done primarily by the Joint Genome Institute, the Oak Ridge National Laboratory, the Umeå Plant Science Centre, and Genome Canada.
Pteris (brake) is a genus of about 300 species of ferns in the subfamily Pteridoideae of the family Pteridaceae. [1] [2] They are native to tropical and subtropical regions, southward to New Zealand, Australia, and South Africa, north to Japan and North America. 78 species (35 endemic) are found in China. [3]