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Accepted Scientific Name: Gymnocalycium anisitsii (K.Schum.) Britton & Rose
Cactaceae (Britton & Rose) 3: 159, fig. 168. 1922 Britton & Rose
Origin and Habitat: Garden origin.
Gymnocalycium anisitsii (K.Schum.) Britton & Rose
Cactaceae (Britton & Rose) 3: 159, fig. 168. 1922
- Gymnocalycium anisitsii (K.Schum.) Britton & Rose
- Echinocactus anisitsii K.Schum.
- Gymnocalycium anisitsii subs. damsii (K.Schum.) G.J.Charles
- Gymnocalycium anisitsii subs. damsii f. cristatum hort.
- Gymnocalycium anisitsii subs. damsii f. monstruosum hort.
- Gymnocalycium anisitsii subs. damsii f. variegata hort.
- Gymnocalycium anisitsii var. griseopallidum H.Till & Amerh.
- Gymnocalycium griseo-pallidum Backeb.
- Gymnocalycium anisitsii var. tucavocense Backeb. ex H.Till & Amerh.
- Gymnocalycium damsii var. boosii Amerh.
- Gymnocalycium damsii var. centrispinum Backeb.
- Gymnocalycium damsii subs. evae Halda, Horáček & Milt
- Gymnocalycium damsii var. rotundulum Backeb.
- Gymnocalycium joossensianum Britton & Rose
Gymnocalycium anisitsii subs. holdii Amerh.
Gymnocalycium 16(3): 531 (-532; Abb. 23-37). 2003 [Aug 2003]
Accepted name in llifle Database:
Gymnocalycium anisitsii subs. multiproliferum (P.J.Braun) P.J.Braun & Esteves
Succulenta (Netherlands) 74(3): 131 (1995)
- Gymnocalycium anisitsii subs. multiproliferum (P.J.Braun) P.J.Braun & Esteves
Gymnocalycium anisitsii subs. volkeri Amerh.
Gymnocalycium 17(1): 559 (-560; abb. 35-38). 2004 [Feb 2004]
- Gymnocalycium anisitsii var. tucavocense cv. Red Form
Description: It forms dense clusters about 15-20 cm in diameter, composed of a great number of small pink and red stems, each of them usually less than 3 cm wide.
Spines: 5-6 all radials, brownish-yellow, 5-15 mm long, subulate and somewhat bent.
Flowers: Not known.
Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium anisitsii group
Gymnocalycium anisitsii is a very polymorphic species with a large range of variability. Two subspecies are recognized, the nominate form and subsp. multiproliferum. There seems to be very little justification for vars. centrispinum, rotundulum, torulosum and tucavocense. Gymnocalycium griseopallidum from the salt-pan desert area on the Bolivia-Paraguay borders may well be another variety or local form which has become adapted to the peculiar local conditions of that region.
- Gymnocalycium anisitsii (K.Schum.) Britton & Rose: may be solitary or freely offsetting with white flowers. Spines 5 to 7, tortuous, up to 6 cm. long. It is a very polymorphic species with a large range of variability. Distribution: Bolivia, Paraguay.
- Gymnocalycium anisitsii subs. damsii (K.Schum.) G.J.Charles: has stems to 10 cm tall, 8-15 cm in diameter, green to brownish-green, often with horizontal strips. Ribs broad to acute, and more or less notched. Distribution: Bolivia, Paraguay and Brazil.
- Gymnocalycium anisitsii subs. damsii f. cristatum hort.: crested form. Various clones. Garden origin.
- Gymnocalycium anisitsii subs. damsii f. monstruosum hort.: monstrous form. Various clones. Garden origin.
- Gymnocalycium anisitsii subs. damsii f. variegata hort.: variegated form. Various clones. Garden origin.
- Gymnocalycium anisitsii var. griseopallidum H.Till & Amerh.: has paler greyish-green, sharply ribbed stem and greenish-white flowers. Distribution: Santa Cruz (Salinas de San Jose, Cordillera ) Bolivia.
- Gymnocalycium anisitsii subs. holdii Amerh.
- Gymnocalycium anisitsii subs. multiproliferum (P.J.Braun) P.J.Braun & Esteves: has numerous violet-green stems, longer spines, and rose-colored flowers. Distribution Mato Grosso do Sul, Brazil.
- Gymnocalycium anisitsii var. tucavocense Backeb. ex H.Till & Amerh.: has beautiful deep mauve to violet flowers, is remarkably prolific in branching and very precocious flowering.
- Gymnocalycium anisitsii var. tucavocense cv. Red Form: it is a garden selection characterized by an unusual bright red colouring of the body, this colour is due to a reduced production of chlorophyll pigments.
- Gymnocalycium anisitsii subs. volkeri Amerh.
- Gymnocalycium damsii var. boosii Amerh.: has longer, thin, flexible usually twisted spines up to 6 cm long. Flowers bright pink or carmine-red. Distribution: S-E of Chocis, Santa Cruz, Bolivia.
- Gymnocalycium damsii var. centrispinum Backeb.: has 7 radial spines and one long needle-like central spine to 2 cm long. The flowers are white. Distribution: Bolivia, in the vicinity of Roboré.
- Gymnocalycium damsii subs. evae Halda, Horáček & Milt
- Gymnocalycium damsii var. rotundulum Backeb.: it is characterized by rounder and scarcely raised tubercles. Distribution: Bolivia, Brazil & Paraguay.
- Gymnocalycium damsii var. torulosum Backeb.
- Gymnocalycium damsii cv. Purple Blush: has purple blushed stems and nice pink blooms. It seems related to Gymnocalycium damsii var. tucavocense to which it shares many characteristics.
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
4) N. L. Britton, J. N. Rose “The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family.” Volume 4, The Carnegie Institution of Washington, Washington 1923
5) Curt Backeberg “Die Cactaceae: Handbuch der Kakteenkunde” Gustav Fischer Verlag, Stuttgart New York 1982–1985
Gymnocalycium damsii f. monstruosum (Gymnocalycium anisitsii subs. damsii f. monstruosum) Photo by: Valentino Vallicelli
The gallery now contains thousands of pictures, however it is possible to do even more. We are, of course, seeking photos of species not yet shown in the gallery but not only that, we are also looking for better pictures than those already present. Read More...
Cultivation and Propagation: It is a summer grower species that is easy to cultivate.
Growth rate: It is a relatively rapidly growing species that will make dense crowded clumps given the best conditions.
Soils: It likes very porous standard cactus mix soil. Prefer a low pH compost, avoid substrata rich in limestone; otherwise growth will stop altogether.
Repotting: This plant needs plenty of space for its roots, repotting should be done every other year or when the it has outgrown its pot. Use pot with good drainage.
Watering: Needs moderate to copious waterings in summer, but do not overwater (Rot prone), keep dry in winter at a minimum temperature of 0°C.
Fertilization: Feed with a high potassium fertilizer in summer.
Hardiness: Reputedly resistant to frost if kept on the dry side prior to, and during, cold weather (hardy to -5 C ° C, or less for short periods).
Exposition: The plant tolerates extremely bright situations but enjoys filtered sunlight or afternoon shade, inside it needs bright light, and some direct sun. Tends to bronze in strong light, which encourages flowering and heavy spine production, but is likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.
Uses: It is an excellent plant for container growing. It always looks good and stays small. It look fine in a cold greenhouse and frame or outdoor in a rockery.
Pests & diseases: It may be attractive to a variety of insects, but plants in good condition should be nearly pest-free, particularly if they are grown in a mineral potting-mix, with good exposure and ventilation. Nonetheless, there are several pests to watch for:
- Red spiders: Red spiders may be effectively rubbed up by watering the plants from above.
- Mealy bugs: Mealy bugs occasionally develop aerial into the new growth among the wool with disfiguring results, but the worst types develop underground on the roots and are invisible except by their effects.
- Scales: Scales are rarely a problem.
- Rot: This species is particularly easy and accommodating, seldom suffer of cryptogamic diseases. Rot it is only a minor problem with gymnocalyciums if the plants are watered and “aired” correctly. If they are not, fungicides won't help all that much.
Propagation: Division or grafting. To make a cutting twist off a branch and permit it to dry out a couple of weeks, lay it on the soil and insert the stem end partially into the soil. Try to keep the cutting somewhat upright so that the roots are able to grow downward.
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