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"A tree which grows plentifully in Europe and in Siberia. It is a native of Britain, and is frequent in Scotland, where it is found even at an elevation of 1500 feet above the sea. It has recieved the specific name tremula, from the readiness with which its leaves are thrown into a tremulous motion by the slightest breath of wind. a, a portion of a branch with catkins; b, do., with leaves." — Chambers' Encyclopedia, 1875

Aspen

"A tree which grows plentifully in Europe and in Siberia. It is a native of Britain, and is frequent…

Also known as Populus tremula. A medium-sized tree growing up to 10-25 meters tall.

Aspen

Also known as Populus tremula. A medium-sized tree growing up to 10-25 meters tall.

Also known as Populus grandidentata. The branch of a Large-Tooth Aspen, native to eastern North America.

Branch of Large-Tooth Aspen

Also known as Populus grandidentata. The branch of a Large-Tooth Aspen, native to eastern North America.

This shows the fruiting ament of Large-toothed Aspen, Populus grandidentata, (Keeler, 1915).

Large-Toothed Aspen Flowers

This shows the fruiting ament of Large-toothed Aspen, Populus grandidentata, (Keeler, 1915).

Also known as Populus tremuloides. A species of tree native to the cooler areas of North America.

Quaking Aspen

Also known as Populus tremuloides. A species of tree native to the cooler areas of North America.