Echinocereus reichenbachii is a perennial plant and shrub in the cactus family. The species is native to the Chihuahuan Desert and parts of northern Mexico and the southern United States, where it grows at elevations up to 1,500 meters (4,900 ft). One of the smaller Echinocereus species, it reaches 7.5 to 30 centimetres (3.0 to 11.8 in) tall and 4 to 10 centimetres (1.6 to 3.9 in) wide. E. reichenbachii is cold and heat tolerant, and prefers dry, well-drained soils near rock outcroppings.Photograph: Rationalobserver