1.-It is a quite common in submontane at the Sierra Madre Oriental scrub, grows as a vine and sometimes it is not easy to see when it is not in bloom, on the other hand you realize easily from his presence when pass close to it because you always end up espinado. 2.-It is a creeping shrub native of Deserts and arid grasslands in California, Arizona, New Mexico and Texas in the United States and Mexico.