A tall, rank-growing species of milkweed, 3 to 5 feet high, with pedicelled flowers in terminal and lateral umbels. The horn projecting from the white hood has a long, somewhat curved point. Stem, 3 to 5 feet high. The flowers are loosely clustered, each on a limp, drooping pedicel, as long as the common peduncle. Deep, cool, moist woods. New England, south to Georgia and Alabama.