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  Gymnocalycium marquezii
(Gymnocalycium pflanzii)
CACTUSPEDIA       

 


Gymnocalycium marquezii (G. pflanzi)
It has
fairly heavy spines bent backward in a distinctive fashion.
 

Description: Solitary or slowly clustering, with peculiar spine clusters characteristically bent backward in a distinctive fashion.
Stem: Flattened-globose,10-15 (25)cm in diameter, 10 cm tall, pale green, to olive green that can tinge of orangish purple in full sun. The epidermis has a velvety appearance. The apex is slightly depressed and woolly.
Ribs: 10 to 12 thick, large, divided into polygonal rounded (not chinned) tubercles, separated by arched furrows.
Roots: Fibrous
Areoles: Large long, oval 10x14 mm, with cream-yellowish wool, then blackish dismantling with time.
Spines: Strong, very stiff, bent backward, initially blackish with a brown base then becoming grey-pinkish to whitish brown with black point.
Radial spines:  (5-)7-9 up to 25 mm long
Central spines: One (or two)  of the same length.
Flowers:
Infundibuliform near the apex, diameter and height 45-50mm. Pericarpell dull green very short. External tepals spatulate, slightly bent outward , white with brownish green midrib. Inner tepals intern narrower, spatulate and slightly denticulate, white with carmine/pink purplish throat. Style carmine with carmine pink 10-12 lobes. Pollen yellow.
Fruits: Globose of approximately 2 cm of diameter, becoming red carmine with maturity. Pulp intense cherry-red.
Seeds: Microsemineum type, section pirisemineum, very small (0.6 X 0.4mm), testa reddish shining and smooth.
Notes:
  G. marquezii is very
similar in structure to G. pfanzii var. riograndense but has shark mat type skin, dark coppery red stem and dark spines.

 

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Photo of conspecific taxa, varieties, forms and cultivars of
Gymnoclycium pflanzii
:

Family: Cactaceae (Cactus Family)

Scientific name: Gymnocalycium marquezii Cárdenas
in: Die Gattung Gymnocalycium in Bolivien.- Kakt. Sukk. 9(2): 26-27, ills. 1958

Type: Cárdenas 5066 – Bolivia: Tarija, Entre Rios, “near Angosto de Villa Montes” [protologue, translated] / “Angosto de Villa Montes, 600 m” [holotype], 600 m, 3.1952 (type herbaria: LIL). LIL 531592 (holotype): rad, corp, ar, sp, fl, ic.

Nowadays regarded as: Gymnocalycium pflanzii (Vaupel) Werdermann 1935

Origin Garden origin (Nursery produced cultivar)

Etymology: Named in the honour of
Dr. J. L. Marquez

Conservation status: Listed in CITES appendix 2.

Synonyms:

  • Gymnocalycium marquezii Cárdenas1958
  • Gymnocalycium pflanzii var. marquezii
  • Gymnocalycium marquezii var. argentinense Backeberg
    nom. inval. (Art.8.2) In: Kakteenlexikon: 169, Abb. Seite 566 (1966).


 

 


Cultivation: Gymnocalycium are very gratifying plants, their culture is easy and their flowering is abundant if we give them a well drained relatively rich substrate (if possible not limestone)  Water regularly in summer (but do not overwater ) keep rather dry in winter, need frequent repottings and a very luminous exposure but avoid direct exposure to the sun rays. This species is particularly easy and accommodating, seldom suffer of cryptogamic diseases. Feed with a high potassium fertilizer  in summer.   Hardy as low as   -5° C (or less) if  kept dry.
Propagation: Usually by Seeds.

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