Jack Dykinga / Fallen Quaking aspen (Populus tremuloides) leaves on wood, autumn, Dixie National Forest, Utah, USA, October.
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Jack Dykinga / Road winding through aspen trees (Populus tremuloides) in autumn, Dixie National Forest, Boulder Mountain, Utah. October 2013.
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Jack Dykinga / Bark patterns of Aspen tree (Populus tremula) in front of a Ponderosa pine (Pinus ponderosa) trunk, Kaibab National Forest, Arizona, USA
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Kirkendall-Spring / Contorted trunks of Aspen trees (Populus tremula) in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Floris van Breugel / Autumn colours of Aspen tree (Populus tremula) Sierra Nevada, California, USA. September 2009
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David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009
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David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009
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David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009
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Laurie Campbell / Looking up the trunk of an Aspen tree (Populus tremula) in autumn, Speyside, Scotland, UK, October
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Wild Wonders of Europe / Zacek / Aspen tree (Populus tremula) trunk with a line of snow on it, Oulu, Finland, February 2009
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Shattil & Rozinski / Fallen Aspen leaves {Populus tremula} on rocks in river in autumn, USA
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Shattil & Rozinski / Aspen tree {Populus tremula} leaves and trunks in autumn, USA
