Actaea racemosa Rhizome Identity & Plant Part
The botanical entity is Actaea racemosa L., a tall perennial of the buttercup family, Ranunculaceae, native from southern Ontario to Georgia and west to Missouri and Arkansas. Its flower spikes can reach 50 cm and carry tight clusters of white stamens. The part used is the underground rhizome with its attached roots; stems, leaves and flowers are not part of this black cohosh extract.
The botanical name has moved. Linnaeus placed the plant in Actaea, Nuttall transferred it to Cimicifuga, and many authors have since returned it to Actaea, so Cimicifuga racemosa on an older specification names the same species. Asian relatives such as Actaea cimicifuga (also written Cimicifuga foetida), A. dahurica and A. simplex are traded as sheng ma or as substitutes, and DNA studies of retail products have found them in place of black cohosh.












