Echinopsis hystrichoides

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Since 4 Aug 2013

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Echinopsis hystrichoides F.Ritter
Kakteen Südamerika 2: 626, fig. 1980
Family: CACTACEAE

Echinopsis hystrichoides Photo by: Valentino Vallicelli

Origin and Habitat: Bolivia Cinti province, (Chuquisaca) at high elevation

Synonyms:

Echinopsis hystrichoides F.Ritter

Echinopsis mamillosa var. histrichoides (F.Ritter) Rausch

Description: Usually solitary globular cactus, up to 18 cm in diameter.
Stem: Flattened globose, green, 12-18 cm in diameter
Ribs: 16-21, sharply notched, to 1.8 cm high
Areoles: Sunken, whitish, to 2 cm apart.
Spines: Light yellow to dark brown.
Central spines: 4-10, straight or curved, 2.5-6 cm long.
Radial spines: 12-20, needle-like, 1.5-4 cm long.
Flowers: Nocturnal, broad funnelform, white to pink, up to 19 cm long.
Fruits: Green, to 4 cm long and 3 cm in diameter.

Subspecies, varieties, forms and cultivars of plants belonging to the Echinopsis mamillosa group

Echinopsis hystrichoides F.Ritter: It is a very spiny species. The spines are particularly strong and very ornamental.
Echinopsis mamillosa Gürke: Produces large-growing fresh green body with relatively short slightly curved spines. The flowers of are truly beautiful white and nocturnal.
Echinopsis mamillosa var. flexilis Rausch: Produces long white or pink flowers, plants sometimes with longer centralspines.
Echinopsis mamillosa var. kermesina (Krainz) Friedrich: The variety "kermesina" differs from the white-flowerd Echinopsis mammillosa for the pink to carmine coloured flowers.
Echinopsis mamillosa subs. silvatica (F.Ritter) P.J.Braun & Esteves: The subspecies 'silvatica' sometimes reaches 30cm high, and the majority of spines are straight.