Mammillaria duoformis

Mammillaria duoformis in habitat.......



Mammillaria duoformis WTH 163
WTH 163 - On a hill at the junction of MEX-190 and MEX-93 (north of Ahuehuetitla) - Puebla - Mexico





Photograph in habitat by Wolter ten Hoeve - Assen - The Netherlands

M. duoformis Craig & Dawson in Allan Hancock Foundation Occ. Papers 1-2:59, plate 19, 1948.
Stem simple, or branching from the base, cylindric; sap watery in tubercles, or 'semi-milky' in stem; axils with bristles.
Central spines 4, 10-12mm. long, pinkish tan below, blackish above, the upper three straight, the lower longer, darker, stout acicular,
hooked (var. duoformis)or straight (var. rectiformis Craig ex Dawson, Lc. p. 60); radial spines 18-20, 5-7mm. long, slender acicular,
straight, orange-tan at very base, chalky white to pale yellow above.
Flowers . 15mm. long, 12mm. in diam. crimson.
Fruit brownish pink, 18mm. long, 4mm. in .diam.., perianth persisting; seeds brown, (irregularly) pitted.
Mexico: Puebla, Puebla-Oaxaca highway near Tehuitzingo, on dry exposed lava hill slope of southern exposure, 30 Jan. 1947s
E.Y. Dawson 4555 in Allan Hancock Herb. no. 10860, (type of var. duoformis), 10861 (type of var. rectiformis). Guerrero, Acapulco - Mexico highway just west of Tierra Colorado, 1 Feb. 1947, E.Y. Dawson


Mammillaria duoformis ML 347
ML 347 - 10km West of Huajuapan de León, 2km South-West of Santa María Xochixtlapilco, OAX-15 - Oaxaca - Mexico

Mammillaria duoformis REP 1044a
REP 1044a - Mecquitepec/Acatlan - Puebla - Mexico
From Walter Hellinx collection - Duffel - Belgium

Mammillaria duoformis
Calapa - Oaxaca - Mexico
From Walter Hellinx collection - Duffel - Belgium

Mammillaria duoformis WTH 163
WTH 163 - On a hill at the junction of MEX-190 and MEX-93, north of Ahuehuetitla - Puebla - Mexico

Mammillaria duoformis
Seeds from Mesa Garden - MG 628

Mammillaria duoformis v. xuchiapensis REP 1677
REP 1677 - Xuchiapa, 1400 m - Puebla - Mexico

Mammillaria duoformis f.ma tenango del valle

I have always seen it spelled "tenango de valle" but the actual city/town name is Tenango del Valle.
I have seen the "de" in many english sites and "del" in many spanish sites