Mammillaria magnimamma Haworth 1824


Mammillaria macracantha A. P. de Candolle 1828

Mammillariazuccariniana Martius 1832, Chilita zuccariniana (Martius)

Orcutt 1926 Mammillaria centricirrha Lemaire 1839 Mammillaria bucareliensis R. T. Craig 1945 Mammillaria vagaspina R. T, Craig 1945 Mammillaria priessnitzii Reppenhagen 1987

Mammillaria marcosii 429

Mammillaria saxícola Reppenhagen 1987 Mammillaria vallensls Reppenhagen 1987 Mammillaria rioverdensis Reppenhagen 1988

Plants solitary at first, later branching basally to form large clumps barely rising above ground level. Stems flattened globose to globose, gray-green to dark blue-green, 10-12 cm (3.9-4.7 in) in diameter. Tubercles firm, four-sided but not sharply angled, with latex, axils with dense white wool, especially when young. Central spines usually absent. Radial spines 2-5, sometimes more, extremely variable, unequal, awl shaped, whitish to yellowish, with dark tips, 15-45 mm (0.6-1.8 in) long, lower one curving downward. Flowers dirty cream colored with reddish midveins, to deep purplish pink, 20-25 mm (0.8-1 in) long and in diameter. Fruits club shaped, dark purplish red, to 20 mm (0.8 in) long. Seeds brown. Distribution: widespread throughout central Mexico in Hidalgo, Guerrero, México, Aguascalientes, Zacatecas, Querétaro, Guanajuato, Tamaulipas, Nuevo León, and San Luis Potosí. The variable Mammillaria magnimamma has received many names.

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