Zamia, genus of 55 species of cycads in the family Zamiaceae, native to tropical and subtropical America. Zamia species are generally small stocky fernlike plants. They have a turniplike, mostly underground stem that in some species reaches 3 metres (10 feet) or more in length. A starchy food is obtained from the crushed roots and stems of certain species, among them coontie, or comfortroot (Zamia integrifolia), found in the southeastern United States and the West Indies. Several species, notably the cardboard palm (Z. furfuracea), are cultivated as ornamentals. Many Zamia species are listed in the IUCN Red List of Threatened Species as endangered or critically endangered.