About Echinocereus stolonifer W.T.Marshall
Echinocereus stolonifer W.T.Marshall typically forms colonies with numerous shoots that branch below the soil surface. Its deep green shoots are egg-shaped to cylindrical, measuring 9 to 30 centimeters long and 5 to 8 centimeters in diameter, and are partially covered by thorns. This cactus has eleven to sixteen low, slightly tuberculated ribs. Each shoot bears one to five strong brownish to gray central spines; the lowest of these spines points downward and can reach up to 2.5 centimeters in length. There are also eight to thirteen gray or whitish radial spines that lie against the shoot surface, growing up to 1.5 centimeters long. The short, funnel-shaped flowers are bright yellow, develop near the tips of the shoots, and can grow up to 7.5 centimeters long with a diameter of 7 to 10 centimeters. Its fruits are reddish and heavily spined. Echinocereus stolonifer occurs in open forests in the Mexican states of Sonora, Chihuahua, and Sinaloa.