Poison hemlock is deadly. -Henriette
A large, tall, and handsome umbelliferous plant, frequent in our hedges. It grows to six feet in height; the stalk is round, firm, hollow, and upright; it is of a dark green, and often stained with purple and yellow. The leaves are very large, and divided into very fine and numerous partitions. The flowers are small and white, and stand in large clusters on the tops of the stalks. The seeds are roundish. The whole plant has a strong disagreeable smell, and has been called poisonous.
The roots are excellent in pultices for hard swellings.