Publication: Gymnocalycium 6(3): 103 1993
Description
G. achirasense is a (usually) solitary geophytic cactus.
Stem: Flattened or globular, dark-green, grey-green to olive green, 5-6 cm in diameter up to 5 cm in height, but in cultivation it can become 7-8 cm high (or more) over the years.
Ribs: 12-15
Radial spines: Stout, aggressive, 10 up to 12, but usually fewer in young plants, bent against the body.
Central spines: Usually absent or 1 erected
Flowers: Are some of the largest in this genus, often growing larger than the plant!, 6 up to 7 cm long and broad, whitish, pale pink to lavender, with a darker mid-strip.
Fruits: Green
Seeds: Dark brown.
Origin and Habitat
Argentina Northeast (Córdoba)
Type locality: Argentina, Prov. Cordoba, Alpa Corral, sltitude 850 m.
Cultivation and Propagation
Summer grower, water regularly in summer, keep rather dry in winter. It grows well in full sun or light shade.
Notes
The variety name “orientale” means that it lies in the most eastern part of the habitat.
Bibliography
Major references and further lectures
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James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug./2011
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David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
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Edward F. Anderson “The Cactus Family” Timber Press, 2001
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E. W Putnam “Gymnocalyciums: Handbook No. 5.” National Cactus And Succulent Society, Smart & Co. (Printers) Ltd., Brackley, Northants. 1978
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N.L. Britton, J.N. Rose. “The Cactaceae: Descriptions and illustrations of plants of the cactus family” Volume 3
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