Origin: USA (Arizona: Pima County), Mexico (Sonora: Sierra del Viejo)
Growth Habits: Clumping loosely up to 20 stems, each stem, up to 24 inches tall (60 cm), 2.4 to 3.6 inches in diameter (6-9 cm); 10 to 14 ribs; tubercles not prominent; large circular areoles; spines obscuring the stem; 4 to 6 central spines, 1 to 3 inches long (2.5 to 7.5 cm); 6 to 12 radials, 0.5 to 1 inch long (12-25 mm)
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