[Trees in the Willow Family Found West of the Cascade Mountains of Oregon and Washington]

Aspens, Cottonwoods and Poplars West of the Cascade Mountains of Oregon and Washington

The Genus Populus

Fremont Cottonwood: Populus fremontii

Fremont Cotonwood: Populus fremontii ssp. fremontii

White Poplar: Populus alba (Synonyms: Populus alba var. bolleana, Populus alba var. pyramidalis) - Non-native, naturalized.

Necklace Poplar: Populus deltoides ssp. monilifera (Synonym: Populus deltoides var. occidentalis) - Non-native, naturalized.

Fremont Cottonwood: Populus fremontii ssp. fremontii - Non-native, not naturalized.

Black Cottonwood, Lombardy Poplar: Populus nigra (Synonyms: Populus dilatata, Populus italica, Populus nigra var. italica) - Non-native, naturalized.

Quaking Aspen: Populus tremuloides (Synonym: Populus tremula ssp. tremuloides) - Native.

Black Cottonwood: Populus trichocarpa (Synonyms: Populus balsamifera, Populus balsamifera ssp. trichocarpa, Populus balsamifera var. californica, Populus trichocarpa var. cupulata, Populus trichocarpa var. ingrata) - Native.

Gray Poplar: Populus xcanescens - Non-native.


Paul Slichter E-mail