Original Description:The Cactaceae 2
p.79 - Britton & Rose (1920)
Plant prostrate, bright green, 7-ribbed, 1.5 to 2 cm thick, the ribs scarcely crenate; areoles elevated, about 1 cm apart; spines 15 to 20 at an areole, acicular, 1 to 2 cm long, yellow when young, gray when old; ovary densely covered with yellow spines; perianth about 1.5 cm long; fruit about 1.5 cm in diameter.
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