Plants solitary or forming clumps. Roots fibrous. Stems globose, to 3 cm (1.2 in) high and 5.5 cm (2.2 in) in diameter. Tubercles cylindrical, without latex, axils with one to five thin, white bristles to 10 mm (0.4 in) long. Central spines 02, hooked or straight, reddish brown, yellow basally, somewhat flexible, to 12 mm (0.5 in) long. Radial spines 16-24, straight, bristle-like, flexible, thin, glassy white, to 11 mm (0.4 in) long. Flowers yellowish green, to 30 mm (1.2 in) long and in diameter. Fruits green, becoming brown. Seeds black. Distribution: north of Acatlan, Puebla, Mexico.
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