Shrubs or small trees, with few branches, usually at acute angles. Stem segments green, 6-17.5 cm; tubercles broad, rounded, oval, 1.5-2.2 cm. Spines 15-25 per areole, brown, aging gray, not baggy sheathed; major 5-7 abaxial spines deflexed, sub-parallel. Flowers: inner tepals yellow-green, sometimes reddish orange tinged. Fruits densely spiny; areoles 16-26.

Flowering spring (May). Mojave Desert, edges of juniper woodlands, rocky slopes; 1100-1200 m; Ariz., Utah.

PLANT: Shrubs or small trees with few branches, mostly at acute angles. STEM: segments green, 6-17.5 cm long; tubercles broad, rounded, oval, 15-22 mm long. SPINES: brown, aging gray, not baggy-sheathed, (14-)18-30 per areole; major 5-7 basal spines deflexed, sub-parallel. FLOWER: inner tepals yellow-green, sometimes reddish orange-tinged. FRUIT: densely spiny; areoles 16-26, 2n = 22. NOTES: Desert, adjacent juniper woodlands, rocky slopes; Mohave, Yavapai cos.; 1150-1200 m (3700-3900 ft); May; UT -. REFERENCES: Pinkava, Donald J. 1999. Cactaceae. Ariz. - Nev. Acad. Sci. 32(1).