genus Ariocarpus ge·nu·sa·riocarpus uncommon noun 1. slow-growing geophytic cacti; northern and eastern Mexico; southern Texas SynonymsAriocarpusgenus Ariocarpus Related words Broader terms caryophylloid dicot genus Parts Cactaceae Part of living rock WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.