No. 16. Mammillaria meyranii
Original reference;- Helia Bravo Hollis,, Cactus and Succulent Journal of Great Britain, Volume 18, page 84, 1956.
Body: Simple, producing new heads at the base, columnar, very long, 5 - 55 cm. long by 4 - 5 bin. wide, apex rounded and covered by the spines, semi-milky sap.
Tubercles in 13 and 21 spirals, small, 8 mm. long and 2 - 3 mm. wide, conical and somewhat tetrangular at the base, green with a
yellowish tinge.
Axils of younger tubercles with scant white wool, but without bristles or hairs.
Areoles oval, 2 mm. long with some white wool in youth.
Spines: Radials 17 - 19, acicular, straight, 3 - 6 mm. long, lower ones longer, horizontal, radiating, white with yellowish base, at first yellowish red with brown tip.
Centrals 2, divergent, one pointing upward and the other inclined downward, acicular, 1 cm. long or less, those at the apex of the
plant orange yellow with chestnut tip, the others dirty white or greyish.
Flowers: Funnel shaped, appearing in. a crown around the apex, 18 .mm. long including ovary. Outer perianth segments lanceolate, acuminate, margins ciliate, purplish brown. Inner perianth segments linear lanceolate, purple; filaments White, anthers cream, style white, somewhat curved, stigma lobes 5 - 7, green, nectar region somewhat striated, perianth tube short.
Fruit: Clavate, somewhat curved, 2 cm. long and 5 mm. thick at its widest part, light purplish rose with brownish-green tinge; at times there is a very small scale hear the tip, aromatic.
From "The Journal of the Mammillaria Society" Vol.1 n.6 - October 1961
Seeds 1 mm. long, pyriform, light brown, shiny, with cellular depressions very irregularly quadrangular and rims provided with thin intercellular grooves; hilum basal lateral, micropyle pore near hilum.
Distribution: South western part of State of Mexico, near the Santa Barbara plant of the "Miguel Aleman" Hydroelectric System.
Type: Collected in the region mentioned and deposited in the herbarium of the Instituto de Biologia of the University of Mexico, No. 3876.
Notes:
This species is named after Dr. Jorge Meyran.
Mammillaria meyranii ESP 7/51
ESP 7/51 - S.Nicolas - Mexico State