Accepted Scientific Name: Ariocarpus fissuratus K.Schum. in Engl. & Prantl
Nat. Pflanzenfam. Nachtr. [Engler & Prantl] 3, Abt. 6a: 195. 1894
Ariocarpus fissuratus f. rubra Photo by: Prof. Ilham Alakbarov
Origin and Habitat: Garden origin (Nursery produced cultivar)
Synonyms:
See all synonyms of Ariocarpus fissuratus
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Accepted name in llifle Database:Ariocarpus fissuratus K.Schum. in Engl. & PrantlNat. Pflanzenfam. Nachtr. [Engler & Prantl] 3, Abt. 6a: 195. 1894Synonymy: 22
Cultivars
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Description: Ariocarpus fissuratusSN|2114]]SN|2114]] is a geophyte plant that produces a star-shaped rosette of fleshy, deltoid to hemispheric tubercles, which have no spines and lie almost flat on the soil surface. They are usually solitary, rarely giving rise to side shoots from old areoles, they grow extremely slowly, to 20 cm in diameter.
Forma rubra (red form): The red schizochromic form (Ariocarpus fissuratusSN|2114]]SN|2114]] f. rubra) has bright orange-red to deep purple stems due to the absence (or reduced production) of chlorophyll pigments: every other pigment is present at normal levels, the dominant green colouration is lost, but will still more than likely have normal other pigments that give the yellow overall appearance of the stem. This form with red stems is very attractive and highly prized. This schizochromic form is almost always seen grafted on stronger columnar species, and cannot can be grown on its own roots.
Tubercles: The tubercles, about as long as wide, are closely packed and form a coarse mosaic. Exposed faces of tubercles, deeply fissured on either side of the central areolar groove, are coarsely rugose, and are often sharply angled apically; and with a lateral longitudinal furrow on each side of the tubercle, along the edge.
Areoles: The areoles are up to 3 mm wide, sometimes confined to middle of tubercle faces instead of extending to tips.
Roots: Each plant has a large turnip-like taproot, which lies below the soil surface and serves for water storage.
Flowers: These plants have a woolly crown, from which emerge bright pink-violet flowers up to 2,5-5 cm, 2 times wider than long when fully expanded. Flowers last for 3 to 4 days.
Blooming season: October, November.
Fruits: white or green, with lots of seed.
Subspecies, varieties, forms and cultivars of plants belonging to the Ariocarpus fissuratus group
Bibliography: Major references and further lectures
1) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
2) 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
3) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
Cultivation and Propagation: Variegated and albinos cacti are regarded as choice and difficult in cultivation, but despite that many of them are relatively easy to grow. But be aware that they cannot tolerate prolonged exposure to direct sun light (especially during the hottest summer days), so grow them in half-shade or under filtered sun. They are sometime seen as grafted plants, but many grow well on their own roots, too.
On the contrary, the albinos can survive only if grafted on a strong green base.
Use mineral well-permeable substratum with little organic matter (peat, humus). Water sparingly from March till October and keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (In general these plants are more tender and cannot endure freezing temperatures ) In the rest period no high atmospheric humidity!!
Propagation: Usually by seed. Plants are often grafted onto column-shaped cacti.