Henbane
a plant of the nightshade family. It is related also to tobacco and the stramonium or jimson weed. It is a poisonous plant. It proves deadly when eaten by poultry, whence the name. It is a coarse, upright, clammy herb, with hairy foliage and a disagreeable odor. It has pale yellowish flowers streaked with purple veins. The leaves are used for medicinal purposes, resembling belladonna in their effect. Overdoses are fatal to man, but swine appear to eat without injury. One of its common names is hog's bean. Henbane is a native of Europe and northern Asia. It has become established in the eastern part of the United States.
Volume III · Aiton’s Encyclopedia