Original Description:The Cactaceae 4
p.84 - Britton & Rose (1920)
Globose or becoming short-cylindric, 6 cm high; tubercles milky, in 26 rows, bluish green, very woolly in axils when young; spine-areoles very woolly at first; radial spines 8 to 10, slender, pale with reddish tips; central spines generally 2, a little longer than radials, brown throughout, slightly divergent; flowers borne near top of plant but not in axils of youngest tubercles, about 1 cm long, pinkish, with margins of perianth-segments paler; anthers pinkish; stigma-lobes about 6, recurved, cream-colored,.
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