They are globular or oval cacti that produce ramifications at the base and form colonies several meters wide. They have 8 sharp ribs with round areolas and yellowish radial spines; the central spines are flatter and have transverse striae. The flowers are yellow and funnel-shaped. They bloom in summer.
They are slow-growing cacti that are used in rockeries, in cactus and succulent gardens or in pots for patios, terraces or greenhouses.
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