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Range DescriptionThe species is distributed in the Mexican states of Chihuahua, Coahuila, Durango, and Zacatecas, and in the United States in Texas (HernÃ¡ndez et al. 2004). It occurs from Presidio County, Texas southeast along the Rio Grande and near the lower Pecos River. In Mexico, it occurs near the Rio Grande in the adjacent states of Chihuahua and Coahuila. This cactus grows at altitudes between 500 and 1,170 m asl.