View source for Mammillaria arida

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|genus=Mammillaria
|species=arida
|Min ht metric=cm
|Temp Metric=°F
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{{Inc|
Mammillaria arida, Rose. Sts. usually simple, globular, deeply seated in the ground, 1-2 in. diam.: tubercles very milky, nearly terete: radial spines about 15, pale, with dark tips; central spines 4-7: fls. 6 lines long; petals cream-colored to a pale yellow: fr. clavate; seeds brown. Only known from the collection made by J. N. Rose on an island in the Gulf of California near La Paz in 1911.
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