Black Cottonwood, Balsam Poplar
Populus balsamifera ssp. trichocarpa
Synonyms: Populus balsamifera, Populus balsamifera ssp. trichocarpa, Populus balsamifera var. californica, Populus trichocarpa var. cupulata, Populus trichocarpa var. ingrata
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A black cottonwood shedding copious amounts of its downy seeds onto the Springwater Trail about half a mile east of Main City Park, Gresham, OR.....June 22, 2024.
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The photo at left shows the leaf shapes of leaves
of black cottonwood from SnowKing SnowPark along Rd #82on the southeastern slopes
of Mt. Adams.........August 25, 2005. The upper leaf surface is
shown in the middle. The photo at right shows a close-up of the glaucous lower leaf surface of black cottonwood as seen at about 6900' on the moraines at the base of the Adams Glacier on Mt. Adams.........September 18, 2008.
The photo above shows the lighter colored lower
leaf blade surface of black cottonwood from SnowKing SnowPark along Rd #82on
the southeastern slopes of Mt. Adams........August 25, 2005.
The photo above shows a close-up of the upper leaf surface of black cottonwood as seen at about 6900' on the moraines at the base of the Adams Glacier on Mt. Adams........September 18, 2008. Plants at this location are very reduced in size and at most are a meter high.
Paul Slichter