Echinocereus schereri

Echinocereus schereri is a species of cactus native to Mexico.

Description
Echinocereus schereri typically grows solitary with gray-green cylindrical shoots up to 22 cm long and 10 cm in diameter. It has 12 to 18 tuberous ribs and no central spines. There are 21 to 24 comb-like radial spines, slightly pink to brownish with darker tips, measuring 0.6 to 1.2 cm long. The flowers are funnel-shaped and reddish-purple, appearing near the shoot tips. They are 8 to 9 cm long and 8 to 11 cm in diameter. The fruits are spherical to egg-shaped, starting green and turning brown.

Distribution
Echinocereus schereri is found growing in the rocky slopes and shrub-land in Sonora ( Sierra de Alamos, San Antonio, Arroyo Gochico, Rio Cuchujaqui, upper Rio Cuchujaqui, E of Maicoba), Chihuahua ( Sierra Charuco), and Durango, Mexico at elevations between 350 to 1800 meters. Plants are found along with Cochemiea grahamii, Mammillaria standleyi, Mammillaria marksiana, Mammillaria berkiana, Mammillaria standleyi, and Echinocereus subinermis.

Taxonomy
It was first described by Gerhard R. W. Frank in 1990. The species is named in honor of German cactus collector Egon Scherer.