Original Description:The Cactaceae 4
p.56 - Britton & Rose (1920)
Short-cylindric, 6 to 12 cm long by 5 to 6 cm in diameter, almost covered by the numerous white spines; tubercles rather short, light green, with a narrow groove above; radial spines numerous, spreading bristly; central spines several, a little shorter than the radials and brown or black-tipped; flowers 15 mm long, cream-colored or sometimes purplish; outer perianth-segments ciliate; inner perianth-segments oblong, obtuse, entire; style white; stigma-lobes very short, yellowish green; fruit crimson, 2 cm long
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