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Gymnocalycium monvillei

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Gymnocalycium monvillei
Strongly spined and hardy species from Argentina with long stiff yellow translucent spines with a red base on a bright green background.
 

Description: G. monvilley is a (usually) solitary geophytic cactus.
Stem: Flattened or globular, dark-green, grey-green to olive green, up to 20 cm in diameter, up to 8 cm  tall. (but in cultivation plants can grow up to 30 cm in diameter)
Ribs: 10-17(-20), broad, obtuse, tuberculate with chin like protrusions.
Spines: Stout, thick, slightly curved, yellow with usually reddish bases, often translucent , but also orange, black or reddish.
Radial spines: 7-13, 3-4 cm long
5-7 up to 12, but usually less in young plants, flattened against the body.
Central spines: Usually absent, or 1 to 4 erected.
Flowers: Are some of the largest in this genus, often growing larger than the plant!, funnel-shaped 4 to 8 cm long and wide, white flushed with pink or pink and often double petaled.
Blooming season:
Summer, It takes 5-6 years from seed before flowers.
Fruits:
Green that became yellowish at maturity, globose, up to 2 cm in diameter.
Seeds:
Up to 1 mm brownish-red.

Recognized subspecies, varieties and forms:

Subsp. monvillei. has 7-13 curving, ± compressed radial spines usually yellow (Origin Córdoba province)
Subsp. horridispinum Has 10-12 strong stiff radial spines ()
Subsp. achirasense Has 10-12 radial spines almost flat against the plant body (Origin San Luis province)
Subsp. Brachyanthum Has approx. 7 spines (Origin San Luis province)
 

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Family: Cactaceae (Cactus Family)

Scientific name:  Gymnocalycium monvillei (Lemaire) Britton & Rose 1922

OriginArgentina, Córdoba province (Sierras grandes and Chicas de Córdoba) and San louis province.

Conservation status: Listed in CITES appendix 2.

Synonyms:  

  • Echinocactus monvillei Lemaire 1838
  • Echinocactus multiflorus J. D. Hooker 1845
  • Gymnocalycium multiflorum (J. D. Hooker) Britton & Rose 1918
  • Gymnocalycium brachyanthum Gürke 1907
  • Gymnocalycium monvillei subsp. brachyanthum (Gürke) H. Till 1993
  • Gymnocalycium oursellianum (Cels ex Salm Dick) y. Itó - Not validly published
  • Gymnocalycium schuetzianum H. Till & Schatzl 1981
  • Gymnocalycium achirasense H. Till & Schatzl ex Till & Schatzl 1987
  • Gymnocalycium monvillei subs. achirasense ( H. Till & Schatzl ex Till) H.Till 1993
  • Gymnocalycium horridispinus G. Frank ex Till 1987
  • Gymnocalycium monvillei subsp. achirasense (G. Frank ex Till) H. Till 1993

 

 

 

Cultivation: It is a summer-growing species that offers no cultivation difficulty.  Water regularly in summer (but do not over-water).  Keep rather dry in winter. Feed with a high potassium fertilizer  in summer.   Hardy as low as   -5° C (or less) if  kept dry.  Sun Exposure: Light shade.

Propagation: Direct sow after last frost or offsets

 

Photo of of plants belonging to the Gymnocalycium monvillei complex (This Taxon has lots of synonyms ( like many other gymnocalycium) whit several controversial varieties and subspecies and comprises a multitude of different forms, but where each form is linked to others by populations of plants with intermediate


 


 

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery Gymnocalicium



 

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This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti