Habitat: Argentina.
Description: a genus of globular or cylindrical cacti. The flowers have a scaly tube and are borne at the top.
Soil: basic mix.
Location: full sun and plenty of air circulation.
Temperature: a minimum of 6-7° (43-45°F) is recommended.
Water: average.
Cultivation tips: propagate from seed.
Main species: A. violaceum, diurnal from pink to purple flowers, brown spines; choose a bright and airy site.
A. glaucum; A. spiniflorum; A.peitscherianum; A.klimpelianum.; A.violaceum; A.catamarcense.
 

Acanthocalycium catamarcense

Acanthocalycium spiniflorum

Acanthocalycium violaceum

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Acanthocalycium catamarcense