MICHAEL P. GADOMSKI / SCIENCE PHOTO LIBRARY MICHAEL P. GADOMSKI / SCIENCE PHOTO LIBRARY
Black cohosh (known as both Actaea racemosa and Cimicifuga racemosa), a member of the buttercup family, is a perennial plant that is native to North America. Other common names include black snakeroot, bugbane, bugwort, rattleroot, rattletop, rattleweed, and macrotys. Insects avoid it, which accounts for some of these common names.
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