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Caulophyllum thalictroides, the blue cohosh, a species of Caulophyllum (family Berberidaceae), also called squaw root or papoose root, is a flowering plant in the Berberidaceae (barberry) family. It is a medium-tall perennial with blue berry-like fruits and bluish-green foliage.

Some bees visit the petals' nectar glands early in the season.The plant has been used as a medicinal herb by American Indians. Many Native American tribes, and later European herbologists and mid-wives, would use this herb ...