zamia any of various cycads of the genus Zamia; among the smallest and most verdant cycads
ceratozamia a small cycad of the genus Ceratozamia having a short scaly woody trunk and fernlike foliage and woody cones; Mexico
dioon any cycad of the genus Dioon; handsome palmlike cycads with robust crowns of leaves and rugged trunks
encephalartos any of numerous cycads of the genus Encephalartos having stout cylindrical trunks and a terminal crown of long often spiny pinnate leaves