This genus includes only one species, distinguished by its campanulate regular corolla and baccate 2-celled many-seeded fruit subtended by the foliaceous persistent calyx. The name is from one of the Fates, from its highly poisonous properties.

1. A. Belladonna. Deadly Nightshade, Dwale. - A stout branching perennial, 2 to 4 feet high. Leaves ovate, acuminate, in unequal pairs, 4 to 8 inches long. Flowers solitary, pedunculate, green and purple. Berry black and fleshy, about the size of a small cherry. Found on chalky soil and waste places in this country.