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Acanthocalycium is a genus of cactus consisting of several species from Argentina. The taxon name comes from Greek akantha (meaning prickly) and kalyx (meaning buds), which refers to the spines on the floral tubes.[1]

Acanthocalycium
Acanthocalycium spiniflorum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Tribe:	Trichocereeae
Genus:	Acanthocalycium Backeb.
Species
Acanthocalycium aurantiacum Acanthocalycium ferrarii Acanthocalycium glaucum Acanthocalycium klimpelianum Acanthocalycium peitscherianum Acanthocalycium spiniflorum Acanthocalycium violaceum etc.

These plants are globose to elongate, with numerous ribs on the spiny stems. Flowers range from white to pink to red and open during the day.

Taxonomy

Spinicalycium Fric (nom. inval.) has been brought into synonymy with this genus. Besides, the genus Acanthocalycium has been periodically included in the genus Echinopsis.

Species

Image	Scientific Name	Distribution
	Acanthocalycium ferrarii Rausch	Argentina.
	Acanthocalycium glaucum F.Ritter	Argentina
	Acanthocalycium klimpelianum (Weidlich & Werderm.) Backeb.	Argentina
	Acanthocalycium spiniflorum (K.Schum.) Backeb.	Argentina
	Acanthocalycium thionanthum (Speg.) Backeb.	Argentina

References

• Edward F. Anderson, The Cactus Family (Timber Press, 2001), pp. 105–106
• Willy Cullmann, Erich Götz & Gerhard Gröner, The Encyclopedia of Cacti (Alphabooks, 1086). pp. 124–125

На других языках

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- [en] Acanthocalycium

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[es] Acanthocalycium

Acanthocalycium es un género de cactus originarios de las provincias de Córdoba y Catamarca, en Argentina. A veces es considerado un subgénero de Echinopsis.

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[ru] Акантокалициум

Акантокали́циум (лат. Acanthocalycium) — род растений семейства Кактусовые (Cactaceae).

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