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Black Cohosh, Bugbane, Snakeroot 
(Actaea racemosa 
formerly Cimicifuga racemosa)

 
Cohosh is Algonquin name or term applied to these plants that in Indian folklore had many medicinal applications.
 
 Bugbane, snakeroot and the Latin “cimex” (bug) and ”fugo” (to drive away”*) confirm that generations on the other side of the Atlantic also regarded this genus very highly, too.
 
And even in our world today, a web search for “cohosh” turns up offers for extracts, dietary supplements and other preparations based on the plant.
 
Are you curious about the name change?  Here's a botanist's reading:  "Cimicifuga racemosa (L.) Nutt., was returned to the genus Actaea L., and the current accepted nomenclature is Actaea racemosa L. Citation for this decision can be found in Compton JA et al, Taxon 1998, 47, 593-634".
 
The citation referred to indicates that the change was based on DNA sequence variation. The L. stands for Linnaeus, who originally named the genus. Nutt. Refers to Thomas Nuttall, an English botanist who traveled the US in the early 1800's
 
Text Provided by: Glenn P., Arboretum Volunteer
Photo by: Angela B., Arboretum Staff