Stenocereus pruinosus

Stenocereus pruinosus grows in the form of a tree with sparsely to richly branching stems and reaches a size of 4–5 m in height. A clear trunk is usually formed. It has a light glaucous trunk with dark green shoots and they are 8 to 12 cm in diameter. There are six (rarely five to eight) corrugated ribs. The areoles with three to nine grayish central spines 2 to 3 cm (rarely up to 5 cm) long. The five to nine (rarely up to twelve) radial spines are also grayish in color and usually less than 15 millimeters. Funnel-shaped flowers, white, up to 9 cm long with the flowers appearing near the tips of the shoots. They open at night and are open until the next day. The elongated green fruit, tinged with red, 6 to 12 cm long and can reach a diameter of 5.5 to 8.1 cm. The flesh is yellow, orange, red, or purple.

Stenocereus pruinosus is found growing in deciduous forest in the Mexican states of Chiapas, Guerrero, Oaxaca, Puebla, San Luis Potosí, Tamaulipas and Veracruz at an altitude of 800 to 1900 meters. Plants are found growing along with Bursera morelensis, Cephalocereus fulviceps, Myrtillocactus eichlamii, Stenocereus stellatus, Lophocereus marginatus, Deamia chontalensis, Pilosocereus quadricentralis, Lemaireocereus hollianus, Polaskia chichipe, Isolatocereus dumortieri, and Escontria chiotilla.

Because of its edible fruit, this species is a valuable food source in its native range, Mexico, being harvested and sold in many rural markets.