About Echinocereus pectinatus (Scheidw.) Engelm.
Echinocereus pectinatus (Scheidw.) Engelm. is an upright, spherical to cylindrical cactus, typically solitary. It grows 8 to 35 cm (3.1 to 13.8 in) long and 3 to 13 cm (1.2 to 5.1 in) in diameter. The entire plant is covered in comb-shaped thorns that create distinct white and pink areas. It has 12 to 23 blunt ribs, with dense, elliptical, white-felted areoles that measure about 3 mm (0.12 in) long. It produces 12 to 30 comb-shaped radial spines, which are slightly bent backward, 5 to 15 mm (0.20 to 0.59 in) long, and colored whitish to pink. It also bears 1 to 5 central spines, which range in color from yellowish to pink to brownish, and measure 1 to 25 mm (0.039 to 0.984 in) long. Its funnel-shaped flowers grow on the side of the stem, are deep pink, and have a diameter of 5 to 15 cm (2.0 to 5.9 in). The outer surface of the flower tube has white, woolly thorns. Its fruits are round to elliptical, purple, fleshy, and covered in thorns. This species is distributed across the Mexican states of Aguascalientes, Chihuahua, Coahuila, Durango, Guanajuato, Nuevo León, San Luis Potosí, Sonora, Tamaulipas, and Zacatecas, as well as in southwestern United States in New Mexico and Texas, where it grows at elevations between 400 and 1900 meters.
