Ariocarpus

Ariocarpus is a small genus of Mexican rock cactus (one species is found in Texas). They have curious rock-like forms and textures, and blend very well with the soil and rocks in their native habitat. They have no spines and the rock like texture has the side effect to reflect the heat of the sun and give them some insulation in summer. They also have a strong turnip-like root that, according to some authors, is able to contract during drought, and somewhat pull them closer to the ground.

All this camouflage has not protected them from cactus hunters, and they slow growth has made them less able to react fast enough to the changes in habitat brought by agriculture and ranching. They are all endangered and protected in their habitats.

In cultivation they are extremely slow to grow, they need summer heat, and a good drainage.

They are propagated by seeds. The seedlings are often grafted on other species to increase the speed at which it grows.

Species and varieties
Ariocarpus confusus (Living Rock, Seven Stars) synonym of Ariocarpus retusus
Ariocarpus elongatus (Living Rock, Seven Stars) synonym of Ariocarpus retusus
Ariocarpus fissuratus (Living Rock, False Peyote)
Ariocarpus fissuratus var. lloydii (Living Rock, False Peyote) synonym of Ariocarpus fissuratus
Ariocarpus lloydii (Living Rock, False Peyote) synonym of Ariocarpus fissuratus
Ariocarpus pulvilligeris (Living Rock, Seven Stars) synonym of Ariocarpus retusus
Ariocarpus retusus (Living Rock, Seven Stars)

© 2004 Philippe Faucon, All Rights Reserved.