Gymnocalycium saglionis

Gymnocalycium saglionis



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Succulentopedia

Gymnocalycium saglionis (Giant Chin Cactus)

Gymnocalycium saglionis (Giant Chin Cactus) is a cactus with a solitary, spherical, more or less flattened stem that slowly grows up to 3…


Description [ edit ]

Named after J. Saglio, an important plant collector in France around 1840, Gymnocalycium saglionis is known to grow very slowly, and grow best in warm and part shady conditions, but tolerate extremely bright situations although they are likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.

The body can range from Dull-green or blue-green, almost cylindrical more or less flattened up to 40 cm in diameter, up to 90 cm tall. Spines can grown to 3−4 cm long, colors varies from yellowish-brown, reddish or white becoming grey with time which contrast well against the green body, 1−3 centrals and 10−15 radials bent against the stem.

Spines become bright red when wet.

Flowers 1.4 inch (3.5 cm) long, white or reddish, often more than one simultaneously. Fruits globular, reddish or dark pink, splits sideways with tiny, shiny black brown seeds.


Named after J. Saglio, an important plant collector in France around 1840, Gymnocalycium saglionis is known to grow very slowly, and grow best in warm and part shady conditions, but tolerate extremely bright situations although they are likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.

The body can range from Dull-green or blue-green, almost cylindrical more or less flattened up to 40 cm in diameter, up to 90 cm tall. Spines can grown to 3−4 cm long, colors varies from yellowish-brown, reddish or white becoming grey with time which contrast well against the green body, 1−3 centrals and 10−15 radials bent against the stem.

Spines become bright red when wet.

Flowers 1.4 inch (3.5 cm) long, white or reddish, often more than one simultaneously. Fruits globular, reddish or dark pink, splits sideways with tiny, shiny black brown seeds.

Gymnocalycium saglionis is cultivated as an ornamental plant around the world, and is commonly for sale. [1] [2] Plants are large and have thick curved spines making this species popular among collectors.


Gymnocalycium saglionis - garden

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Accepted Scientific Name: Gymnocalycium saglionis subs. tilcarense (Backeb.) H.Till & W.Till
Gymnocalycium 10: 215. 1997

Origin and Habitat: Argentina only in an area near Tilcara.

  • Gymnocalycium saglionis subs. tilcarense (Backeb.) H.Till & W.Till
    • Brachycalycium tilcarense Backeb.
    • Gymnocalycium saglione subs. tilcarense (Backeb.) H.Till & W.Till
    • Gymnocalycium tilcarense (Backeb.) H.Till & W.Till

Description: Gymnocalycium saglionis subsp. tilarense differs from subspecies saglionis in having flowers with shorter floral tubes and occurring only in an area near Tilcara.
The typical Gymnocalycium saglionis (commonly known as the "Giant Chin Cactus") is a solitary barrel cactus, rather flattened, often very large, with long spreading and sometimes recurved spines.
Stem: Flattened globose to shortly cylindrical more or less flattened up to 30 (40) cm in diameter, 15-30 cm tall occasionally up to 90 cm tall, dull-green or blue-green.
Ribs: 10-32 according to the size of the plant, low, very broad, sometimes 4 cm. long, separated by wavy intervals, divided into large, low, rounded tubercles.
Areoles: About 2 to 4 cm apart, large, felted when young.
Spines: 8 to 10 on small plants but on old plants often 15 or more, 3-4 cm long, yellowish-brown, reddish or black becoming grey with time which contrast well against the green body at first ascending, afterwards more or less curved outward.
Central spines: 1-3 almost straight.
Radial spines: 10-15 bent against the stem.
Flowers: Broadly funnelform, white or pale pinkish, with reddish throat up to 3-4 cm long, 2-3 cm in diameter, with a very short flower’s tube. inner perianth-segments spatulate, acute scales of the ovary nearly orbicular, rounded, with a scarious margin. The flowers forms a crown on the plant apex and have a hard time coming through the dense mass of spines.
Blooming season: Appearing repetitively during the growing season.
Fruit: Red, globular.

Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium saglionis 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
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


Fruit habit. (Gymnocalycium saglionis subs. tilcarense) Photo by: Diego Armentano

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Cultivation and Propagation: Gymnocalycium bruchii is a summer grower species that is easy to cultivate. It is one of the most cold-tolerant South American species. It can grow outdoors and is hardy to -15° C or even less.
Growth rate: It is a relatively rapidly growing and easily flowering species that will make 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: Use pot with good drainage.
Watering: Needs moderate to copious waterings in summer, but do not overwater (Rot prone), keep dry in winter.
Fertilization: Feed with a high potassium fertilizer in summer.
Hardiness: Reputedly very resistant to frost if kept on the dry side prior to, and during, cold weather (hardy to -15 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.
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: Rot it is only a minor problem with cacti if the plants are watered and “aired” correctly. If they are not, fungicides won't help all that much.
Propagation: Division, direct sow after last frost. Seeds germinate in 7-14 days at 21-27° C in spring, remove gradually the glass cover as soon the plants will be well rooted (ca 1-2 weeks) and keep ventilated, no full sun for young plants! 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.


Gymnocalycium saglionis - garden

Origin and Habitat: Gymnocalycium saglionis has a wide range and is locally abundant in Argentina (Jujuy, Catamarca, La Rioja, Salta, San Juan, Tucumán). It was Originally found in Dept. Trancas, ca. 12 km al norte de Tapia en la ruta 9 a Vipos, 700 m, Tucumán.
Altitude range: 240 to 2,600 metres above sea level.
Habitat and Ecology: This cactus grows on rocky hills within monte and chaco habitats together with Echinopsis leucantha, and Trichocereus terscheckii. This species is common and abundant. It is present in several protected areas and there are no majorare no threats affecting it.

Description: Gymnocalycium saglionis is a solitary barrel cactus, rather flattened, often very large, with long spreading and sometimes recurved spines. They are a rich brown and form a pleasing contrast against the grey green body.
Stem: Flattened globose to shortly cylindrical more or less flattened up to 30 (40) cm in diameter, 15-30 cm tall occasionally up to 90 cm tall, dull-green or blue-green. Apex spineless.
Ribs: 10-32 according to the size of the plant, low, very broad, sometimes 4 cm. long, separated by wavy intervals, divided into large, low, rounded tubercles.
Areoles: About 2 to 4 cm apart, large, felted when young.
Spines: 8 to 10 on small plants but on old plants often 15 or more, 3-4 cm long, yellowish-brown, reddish or black becoming grey with time which contrast well against the green body at first ascending, afterwards more or less curved outward.
Central spines:1-3 almost straight
Radial spines: 10-15 bent against the stem.
Flowers: Broadly funnelform, white or pale pinkish, with reddish throat up to 3-4 cm long, 2-3 cm in diameter, with a very short flower’s tube inner perianth-segments spatulate, acute scales of the ovary nearly orbicular, rounded, with a scarious margin. The flowers forms a crown on the plant apex and have a hard time coming through the dense mass of spines.
Blooming season: Appearing repetitively during the growing season.
Fruit: Red, globular.

Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium saglionis 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
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
6) Ortega-Baes, P. & Kiesling, R. 2013. Gymnocalycium saglionis. The IUCN Red List of Threatened Species. Version 2015.1. . Downloaded on 06 June 2015.


In habitat 2600 metres above sea level, province of Jujuy, Argentina. Photo by: Diego Armentano
- Wet spines are red! Photo by: Valentino Vallicelli
Gymnocalycium saglionis Photo by: Valentino Vallicelli
The flowers have a hard time coming through the dense mass of spines. Photo by: Valentino Vallicelli

Watch the video: 67: Series: From The Potting Bench How To Repot Gymnocalycium saglionis!