Acanthocalycium klimpelianum

Acanthocalycium klimpelianum
(Weidlich & Werdermann) Backeberg 1935

  • – Echinopsis klimpeliana – Weidlich & Werdermann 1927,
    – Lobivia klimpeliana – (Weidlich & Werdermann) A. Berger 1929
    – Acanthocalycium peitscherianum – Backeberg 1935,
    – Echinopsis peitscheriana (Backeberg) – Friedrich & G. D. Rowley 1974

Plants solitary, flattened globose, to 10 cm (3.9 in) in diameter. Ribs about 19, acute, slightly notched. Areoles elliptical, yellowish brown, to 6 mm (0.2 in) long. Central spines 1-4, straight, awl shaped, brownish, lowermost one directed downward. Radial spines 6-10, unequal. Flowers white, 3-4 cm (1.2-1.6 in) long.

Distribution: Cordoba, Argentina.

References: Anderson E.F. - The Cactus Family 



acanthocalycium-minutum-428Autor: Backeberg & Knuth

“Spiny calyx”, referring to the main morphological characteristic of the genus.
A genus of usually single-stemmed plants, globose to lightly elongated, with the apex depressed. Ribs acute, more or less tuberculate, spines usually straight, aciculate to subulate.
Flowers diurnal, subapical (main difference with Echinopsis sensu lato), funnel-shaped to campanulate, white, pink or red, with floral tube formed by thorny scales (hence its name), pollinated by bees or sphingideae, more rarely by hummingbirds. Fruits hard, spherical, with persistent scales, with a vertical dehiscence. Seeds brownish to black, papillose, with the hilum depressed, scattered by rainwater (hydrochory).

The genus Acanthocalycium grows in northwest Argentina, at an altitude between 300 m and 3300 m, on sloping, arid, rocky ground, among grasses, bushes, in the shade of shrubs or in full sun, in valleys or mountainous hillsides.

Argentina (Catamarca, Córdoba, La Rioja, Salta, San Luis, Tucumán).

Currently 5 recognised species:
– Acanthocalycium ferrari* – Rausch 1976 (=A. variiflorum nom. invai.)
– Acanthocalycium glaucum*  – F. Ritter 1964
– Acanthocalycium klimpelianum* – (Weidl. & Werderm.) Backeb. 1935 (= A. peitscherianum)
– Acanthocalycium spiniflorum* – (K.Schumann.) Backeberg 1935 (= A. violaceum)
– Acanthocalycium thionanthum* – (Spegazzini) Backeberg 1935

References: “TAXONOMY of the CACTACEAE” – ISBN 978-84-617-3723-9 (Vol. 1)