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
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Shattil & Rozinski / Swirling leaves of Aspen tree {Populus tremula} floating on water surface in autumn, USA
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Shattil & Rozinski / Swirling leaves of Aspen tree {Populus tremula} floating on water surface in autumn, USA
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Floris van Breugel / Aspen leaves on an early snow, North Fork of Bishop Creek, near Bishop, Eastern Sierra, California, USA, October.
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Floris van Breugel / Aspen (Populus tremula) trees in autumn colours, North Fork of Bishop Creek, near Bishop, Eastern Sierra, California, USA
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George Sanker / Aspen trees (Populus tremula) in Grand Teton NP, Wyoming, USA, October 2009
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Laurie Campbell / Aspen tree (Populus tremula) in autumn, Speyside, Scotland, October
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Mark Hamblin / 2020VISION / Aspen trees (Populus tremula) in autumn, Strathspey, Cairngorms NP, Scotland, UK, September 2011
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Kirkendall-Spring / Trunks of Aspen trees (Populus tremula) casting shadows in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Kirkendall-Spring / Trunks of Aspen trees (Populus tremula) casting shadows in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Kirkendall-Spring / Mount Millicent above Brighton Ski area in Big Cottonwood Canyon, Utah, USA, February 2010
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Grzegorz Lesniewski / Peat bog with Eurasian Aspen (Populus tremula) and Bog bilberry (Vaccinium uliginosum). Bieszczady National Park, the Carpathians, Poland, September.
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David Noton / Autumn colours of the Aspen trees (Populus tremula) and conifers 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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MYN / Niall Benvie / Aspen tree (Populus tremula) twig with new leaves, Alam-Pedja nature reserve, Tartumaa, Estonia, May meetyourneighbours.net project
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Niall Benvie / Aspen leaves {Populus tremula} in autumn, Scotland, UK, October 2007
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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} fallen autumn leaves, USA
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Shattil & Rozinski / Aspen trees {Populus tremula} and evergreens on hillside, Colorado, USA
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Shattil & Rozinski / Aspen leaf {Populus tremula} USA
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Shattil & Rozinski / Aspen tree {Populus tremula} fallen autumn leaves, USA
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Shattil & Rozinski / Aspen tree {Populus tremula} after the first snow of winter, Colorado, USA
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Shattil & Rozinski / Close up of vein in leaf of Aspen tree {Populus tremula} as it changes colour in autumn, USA
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Shattil & Rozinski / Fallen Aspen leaves {Populus tremula} on rock in river, San Luis Valley, Colorada, USA
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Shattil & Rozinski / Aspen trees {Populus tremula} in autumn, Colorado, USA
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Shattil & Rozinski / Close up of veins in leaf of Aspen tree {Populus tremula} in autumn, USA
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Shattil & Rozinski / Fallen Aspen leaves {Populus tremula} on rocks in river, Colorada, USA
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Shattil & Rozinski / Leaves of Aspen tree {Populus tremula} in autumn, USA
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Shattil & Rozinski / Rocky Mountain NP with Aspen trees {Populus tremula} in autumn, Longs Peak in the background, Colorado, USA
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Shattil & Rozinski / Aspen tree {Populus tremula} with the first snow of winter, USA
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Shattil & Rozinski / Leaves of Aspen tree {Populus tremula} in autumn, USA
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Shattil & Rozinski / Fallen Aspen leaves {Populus tremula} on rocks beside river, Colorada, USA
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Michel Poinsignon / Aspen trees (Populus tremula) at sunset with reflections in water, Haff Reimech Nature Reserve, Remerschen, Luxembourg
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Michel Poinsignon / Aspen (Populus tremula) and birch (Betula) trees reflected in water, Autumn, Haff Reimech Nature Reserve, Remerschen, Luxembourg
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Bernard Castelein / Beartooth highway, Montana, USA in autumn with Aspen trees {Populus tremula} in the background and rock with lichen in foreground.
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Bernard Castelein / Aspen trees {Populus tremula} in autumn, Montana, USA
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Rolf Nussbaumer / RF- Trunks of Quaking Aspen trees (Populus tremuloides) in autumn. Rocky Mountain National Park, Colorado, USA. (This image may be licensed either as rights managed or royalty free.)
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Niall Benvie / Eye-shaped knot on American aspen trunk {Populus tremula} USA
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Niall Benvie / Knot on American aspen trunk {Populus tremula} USA
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Niall Benvie / Eye-shaped knot on American aspen trunk {Populus tremula} USA
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Niall Benvie / Eye-shaped knot on American aspen trunk {Populus tremula} USA
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Bernard Castelein / Frosted leaf of Aspen tree {Populus tremula}. USA..
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George McCarthy / Small Aspen Tree (Populus tremula) sapling with crimson coloured autumn leaves, Grand Teton National Park, Wyoming, USA
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George McCarthy / Black Bear (Ursus americanus) climging high up in Aspen Tree (Populus tremula) Wyoming, USA
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George McCarthy / Aspens (Populus tremula) and other assorted trees in Autumn colours, Grand Teton National Park, Wyoming, USA
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George McCarthy / Aspens (Populus tremula) with yellow coloured autumn leaves, Grand Teton National Park, Wyoming, USA
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George McCarthy / Aspens (Populus tremula) and Maple trees (Acer) with Autumn colours, Wyoming, USA
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George McCarthy / Aspens (Populus tremula) in the process of changing colour, Autumn, Wyoming, USA
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George McCarthy / Aspen Tree (Populus tremula) with golden autumn fall leaves, Grand Teton National Park, Wyoming, USA
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George McCarthy / Black Bear (Ursus americanus) with cub amongst colourful Aspen Tree (Populus tremula) saplings, Grand Tetons National Park, Wyoming, USA
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George McCarthy / Aspen Tree (Populus tremula) trunks and Maples in Autumn, Wyoming, USA
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George McCarthy / Black Bear (Ursus americanus) standing and picking berries amongst colourful Aspen Trees (Populus tremula) Grand Tetons NP, Wyoming, USA
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George McCarthy / Aspens (Populus tremula) and Maple trees (Acer) with Autumn colours, Wyoming, USA
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Shattil & Rozinski / Trunks of Aspen trees {Populus tremula} Wyoming, USA
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Shattil & Rozinski / Dew / water drops on fallen Aspen leaves {Populus tremula} Colarado, USA
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Tom Vezo / Aspen trees in autumn {Populus tremula} Arizona, USA.
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TOM MANGELSEN / Aspen {Populus tremula} and conifer woodland, Snake River Canyon, Wyoming, USA.
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TOM MANGELSEN / Aspen and Mountain Maple trees in fall colours , Wasatch Range Utah USA.
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Tom Vezo / Fallen Aspen tree leaves in autumn {Populus tremula} Arizona, USA.
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TOM MANGELSEN / Aspen trees with Fall colours (Populus tremula) Utah, USA Wasatch Mountain Range
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GEORGETTE DOUWMA / Aspen tree {Populus tremula} UK
