Friday, May 27, 2011

The Black Cottonwood







The Black cottonwood (Populus trichocarpa) is a deciduous tree that belongs to the willow family and lives primarily in the western United States. The black cottonwood ranges from Prince William Sound on down the Pacific Northwest to southern California. They have been seen as far east as the Dakotas and as far south as the California Baja. The black cottonwood is a hardwood, and is the tallest of all the populus plants.
Black Cottonwoods grow at rate of around five feet per year till age ten. They begin to produce seed around age ten, the seeds ripen in May or June. The black cottonwood flowers in catkins, staminate male catkins are around 2-3cm long. Pistilate catkins typically are around 8-20cm it is from. The fruit is white fluffy and cottony looking which gives the cottonwood its name. The black cottonwoods have a straight trunk that can get pretty knotty, and typically branches begin to grow at the upper 2/3rd portion of the trunk. The leaves on the black cottonwood are heart-shaped with a point at the end.
The black cottonwood’s resinous nice smelling buds are used to make many perfumes and medicines typically for respitory problems. The black cottonwood is also used to make paper.
Quick interesting fact: The Alamo in San Antonio, Texas is named after the cottonwood. The Spanish name for cottonwood is “álamo.”

http://www.fs.fed.us/wildflowers/plant-of-the-week/populus_balsamifera.shtml
http://pnwplants.wsu.edu/PlantDisplay.aspx?PlantID=217
http://www.fs.fed.us/database/feis/plants/tree/popbalt/all.html
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