Mammillaria deherdtiana

M.deherdtiana Farwig in Cact. Succ, J.Amer. 41: 28. 1969.
Stem solitary, depressed globose, 2.5 cm. tall, 4.5 cm. in diameter, roots thickened fibrous, sap watery; tubercles in 8/13 spirals, conical,
up to 10mm. long; axils slightly woolly or naked.
Central spines 0-6, 3-7mm. long, more or less stout, nearly porrect, pale to dark reddish brown;
Radial spines 33-36, 3-6 mm. long, acicular, somewhat curved, at first yellow, soon glistening white, occasionally slightly reddish-brown tipped.
Flowers up to 5 cm. diameter with a tube 2 cm, long, inner perianth segments bright rose-violet. Filaments and style white, flushed violet at base, anthers eggyolk yellow, stigmas white.
Fruit remaining half-embedded in stem, globular 3-4 mm. in diameter, pale green in exposed portion, perianth persistent,
Seeds 2mm. long, dark brown black, pitted, ridged around the hilum and through the testa.
MEXICO: Oaxaca, between Nejapa, Juquila Mixes and Lachiguiri, barren rocky soil along both., sides of the road Oaxaca-Tehuantepec. Originally collected! by F.Schwarz in 1959. Holotype at POM.
From "The Journal of the Mammillaria Society" Vol.XI - n.5 - Ottobre 1971




Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617





Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617





Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617





Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617




Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617





Mammillaria deherdtiana  
Seeds from Mesa Garden - MG 617







Mammillaria deherdtiana

M.dodsonii Bravo in Cact. Sue. Mex. 15 : 3-5, figs. 2 , 3 . 1970,
Stems solitary, depressed globose', up to 3cm. tall, 4 cm. in diameter,
Roots fibrous, sap watery;
Tubercles in 5 / 8 spirals, conical, 5 mm. long,
4 mm. in diameter at base; axils naked.
Central spines 3~5, 1-2 cm long, reddish brown, stronger than the radials, straight or slightly curved;
Radial spines 20-21, acicular vitreous white, the lower longest, up to 18mm. long.
Flowers large, 4 cm. long, purple; filaments cream, anthers intense yellow; style and stigmas purple.
Fruit not described, enclosed in the stem at the base of the tubercles, Seeds 1.5 mm. long, black, pitted.
MEXICO : Paxaca, Cerro de San Felipe del Agua, north of Oaxaca City,
in rock crevices amongst mosses and ferns, 6 Feb. 1969, J.W. Pods on 401 in MEXU 118775 (type), 118857, 118858 ( a l l ! ) .
Differs from M.deherdtiana in the tubercle spiral count (significant?),
the fewer and longer radial spines, the longer central spines and details of the areoles and flowers.
The type locality is some 80 km. from that of M.deherdtiana, and I would venture to prophesy that linking
forms will be discovered when the area is explored more fully.
From "The Journal of the Mammillaria Society" Vol.XI - n.5 - Ottobre 1971





Mammillaria deherdtiana ssp. dodsonii






Mammillaria deherdtiana ssp. dodsonii





Mammillaria deherdtiana ssp. dodsonii





Mammillaria deherdtiana ssp. dodsonii