any of several North American plants of a genus (Heuchera) of the saxifrage family, with tiny, bell-shaped flowers and an astringent root; esp., coral bells
See alumroot in American Heritage Dictionary 4
(ălˈəm-ro͞otˌ, -ro͝otˌ)
noun
Any of various North American perennials of the genus Heuchera having palmately lobed basal leaves and leafless stalks bearing numerous small greenish, white, or reddish flowers.