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Gymnocalycium calochlorum var. proliferum
(Syn: Gymnocalycium proliferum)
CACTUSPEDIA       

 


Gymnocalycium calochlorum var. proliferum
P109 Nono, Cordoba, Argentina 1000m

 

Description: Gymnocalycium calochlorum is Small flattened cactus that can be found very clumped in habitat.
Stem: About 6 cm wide and 4 cm. high.
Ribs: Flat and tuberculate 8 to 12 (but generally 11), the tubercles are polygonal +/- rounded divided by short transversal grooves .
Areoles: Oval, covered with a yellowish tomentum that tends to whiten as they age
Radial spines: 9-13, they are thin of different length, 5-10 mm long, curved inward and very close to each other. They are white or sometime with a reddish basal portion.
Central spines: Absent.
Flowers: Pale pink, are born near apex, about 6 cm long and 7.5cm in diameter. Flower tube is green scaled. They does not open completely.
Fruits: Ovoidal to clavate 1,2-3,5 cm long more or less elonged, epidermis is greenish with a grey-bluish pruine coat. It is covered by small rounded scales bordered with white and contains a large quantity of seeds with the length of 1 mm.
 

Recognized subspecies, varieties and forms:

  • “proliferum” with a little bigger stem of a darker green colour, and with flowers that open completely, showing curved petals to the outside and of white, brownish white, or pink colour.
  • “roseiacanthum” with smaller stems of about 3 cm. wide and 2 cm. high, showing areolas of yellow colour with twisted spines of pink colour and big flowers of white colour with the pink base

Cultivation: Keep this plant almost dry in winter at a minimum temperature of -5°C (but it  is resistant down to -23 if grown in ground and very dry), prefers a low pH compost otherwise growth will stop altogether. The plant tolerate extremely bright situations  but enjoy  fresh places and some shade during the hottest part of the day in summer.
Propagation: Seeds or by rooting offsets.

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

Photo gallery Gymnocalicium

Family: Cactaceae (Cactus Family)

Scientific name:   Gymnocalycium calochlorum v. proliferum (Backeberg) Backeberg.
Published in: Cactaceae (Backeberg) 3:, 1959

Origin:  Argentina Cordoba alt. 500 ŕ 1300 m

Conservation status: Listed in CITES appendix 2.
 

Synonyms:  

  • Echinocactus calochlorus Boedeker
    Published in: Cacti 1952: 90 1952, 1932
  • Gymnocalycium calochlorum (Boedeker) Y. Ito,
    Published in: M. DKG 260; 1952
  • Gymnocalycium proliferum
  • Echinocactus prolifer
  • Gymnocalycium proliferum var. calochlorum

 


The stem is flat dark green, the spines are white, thin, curved inward and very close to each other.

 

 

 

Photo of conspecific taxa, varieties, forms and cultivars of Gymnocalycium calochlorum.



 

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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