Populus Tremuloides. White poplar, Aspen poplar, American aspen, Quaking aspen.
Botanical name:
Classic texts: Cook 1869.
Populus heterophylla L.
Engl.: swamp cottonwood.
Bot. syn.: Populus argenta Michx. f.
Henriette's Herbal Homepage
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Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.