5-14cm Ariocarpus retusus

Ariocarpus retusus is a unique and highly specialized slow-growing cactus, renowned for its remarkable camouflage that allows it to blend seamlessly with its rocky, limestone-rich surroundings. Unlike typical cacti with ribs and prominent spines, it has evolved a distinctive form consisting of hard, triangular, rock-like tubercles, making it a prized specimen among cactus collectors and a fascinating example of adaptation.