One of the most desirable (and unusual) of the cacti, Obregonia denegrii forms a flat rosette of smooth triangular tubercles with weak spines at the tip. This is another of the highly desirable living rock cactus, somewhat similar to Ariocarpus. Our plants are flowering size and are in 5-inch pots. This is an endangered species, primarily because of over collection and agricultural clearing in its native habitat near Tamaulipas, Mexico.
