Echinocereus subinermis

Echinocereus subinermis is a species of Echinocereus. It's type locality is near Chihuahua, Mexico.

Background
At first simple, 10 to 12 cm. high, afterwards a little branching at base, when young pale green, afterwards bluish and finally darker green, erect; ribs 5 to 8, broad, somewhat sinuate; spines all radial, 1 to 2 mm. long, yellow, 3 or 4, deciduous; flowers large, "i to 7 cm. long, yellow; perianth-segments oblanceolate, acute; spines of areoles on ovary and flower-tube short, white; fruit not known. Distributed in Northern Mexico.