Original Description:The Cactaceae 4
p.116 - Britton & Rose (1920)
Cylindric, solitary, 1 to 1.5 dm high, 5 to 6 cm in diameter; tubercles not milky, yellowish, terete, obtuse, closely set; spines all yellow, very much alike, about 11, one usually more central, the longer ones nearly 2 cm long; flowers small, 1 cm long or less, forming a circle around the plant about 3 cm below the top.
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