Cephalocereus senilis
Common name: Old Man Cactus, Bunny Cactus, Old Man of Mexico, White Persian Cat Cactus Family: Cactaceae Synonymous: Cactus bradypus Cactus senilis Cephalophorus senilis Cereus senilis Echinocactus staplesiae Pilocereus senilis Distribution and habitat: Cephalocereus senilis is a species of cactus native to Guanajuato and Hidalgo in eastern Mexico. It is threatened in the wild, but widespread propagation and popularity in cultivation have reduced the demand on wild populations. The species is one of the dominant elements of the xerophile scrub where it grows and it is restricted to calcareous canyons within xerophile vegetation. Description: Cephalocereus senilis is a tall, columnar species with clusters of stem. The individual stems are usually unbranched, being unable to withstand the weight of a side branches adequately. The stem is divided lengthwise into 20 to 30 shallow ribs, along the edges of which run rows of closely set areol...