Actaea rubifolia

About

Actaea rubifolia, commonly known as Appalachian black cohosh or Appalachian bugbane, is a species of flowering plant in the buttercup family. The plant does well in alkaline soils and mature forests. The "bugbane" in the name refers to its flowers' unpleasant smell, which can repel insects. It is poisonous if consumed by humans.

Summary from Wikipedia