Arisaemas have become increasingly popular and highly prized for their sculptural aspect and their intriguing inflorescences. Adding to the fascination of arisaemas is their ability, unique in Araceae, to change their sex many times during their lifetime. This book represents the first attempt since Engler's classification in 1910 to bring order to the confused state of knowledge about the genus in its geographical range. Richly illustrated, this botanical treatment is a comprehensive and invaluable resource for botanists, arisaema growers, and nature lovers.