Mammillaria oteroi

From "The Journal of the Mammillaria Society" - vol.15- n.5 - pag.51
M. oteroi Glass & Foster in Cact. Succ. J. Amer. 47 : 24 with figs. (1975).
Freely clustering, the offsets readily detaching, individual stems 2-3 cm. high, 3-4 cm. in diameter; tubercles more or less terete, 8-9mm. long, about 4mm. in diameter at the base, flabby, axils with a tuft of wool and few hairlike bristles. Central spine 1, about 11 mm. long, hooked, reddish brown, whitish at base; radial spines 12-14, 6-8 mm. long, slender acicular, white tipped brown. Flowers 15-16 mm. long, segments with muddy cerise midstripe, stigmas (short) pale yellowish green. Fruit globose, 7-8 mm. long, bright red; seeds 1-2 m m . long, black, finely pitted.
MEXICO: Oaxaca, Alta Mixteca, near Buenavista de Concepcion, alt. approx. 1800 m, under oak trees in blacky humusy soil with Agave gilbeyi and Yucca sp. 1971, F. Otero in AbG 72-003 (POM, holo., MEXU, clonotype).
A most interesting discovery belonging to Series Stylothelae whose distribution has not hitherto been known to extend south of the volcanic belt in Mexico (although M. prolifera is said to occur in Colombia). The species is as distinctive as any member of the Series and worthily bears the name of its collector, the correspondent and friend of many enthusiasts in Europe, Felipe Otero.




Mammillaria oteroi

Mammillaria oteroi ML 351
ML 351 - Suchixtlahuaca, Tejupan, 2250m - Oaxaca - Mexico