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Gymnocalycium stellatum var. paucispinum
(Syn: Gymnocalycium asterium "paucispinum")

CACTUSPEDIA       

 


Form flat greyish/brown stem with three strong addpressed spine spines

 

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Family: Cactaceae (Cactus Family)

Scientific name:  Gymnocalycium stellatum var. paucispinum (Backeb.) R.Strong

Notes: The 'Gymnocalycium asterias ( or asterium) ' synonym was recently deemed an illegitimate name during reclassifications, but it is still widely used.

OriginArgentina (Cordoba, Catamarca)

Conservation status: Listed in CITES appendix 2.

Synonyms:  

  • Gymnocalycium stellatum subsp. occultum (Frič ex Schütz) H.Till & W.Till, 1996
  • Gymnocalycium obductum Piltz,
    Pubblished in: Succulenta 69(4): 74-78 + title plate, 1990 = stellatum
  • Echinocactus stellatus Spegazzini
  • Gymnocalycium asterias Y-Ito
  • Gymnocalycium asterium A. castellanos 1957 (Illegitimate name)
  • Gymnocalycium stellatum ssp. asterium
  • Gymnocalycium occultum Fric ex Schütz 196

 

Description: G. stellatum var paucispinum is a beautifull slowly growing plant with a noticeably flatten body,  at first solitary, later clustering.
Stem: Dark grayish-brown to olive coloured epidermis, flattened globose, 7.5-10 cm in diameter.
Will offset after a considerable period of time.
Ribs: 7-11, flat rounded, without prominent chin-like protrusions.
Spines: Usually 3 (occasionally more) brown, becoming grey with age,
spider-like, add-pressed, short, straight to slightly curved and flattened against the stem (rarely sticking out - easy cactus to handle)
Flowers: Creamy-white with a
dull red throat, up to 6,5 cm long, 4.5 cm in diameter.
Fruits: Cylindical, tannish-green.
Blooming season: Flowers are produced in late spring and remain open for up to twelve days.

Recognized subspecies, varieties and forms:

The “occultum” subspecies occurs in Catamarca.
The “stellatum” subspecies occurs in Cordoba.
 

 


Cultivation:
This Gymnocalycium is supposed to be one of the most difficult species in cultivation, and very slow to get to a reasonable size. It will offset after a considerable period of time. It is a summer growing species that needs regular water in summer (but do not over-water ).  Keep rather dry in winter.  This plant does not like extremely bright situations. Give it some shade during the hottest part of the day.  Keep this plant in a low pH  compost;  otherwise growth will stop altogether. Feed it with a high potassium fertilizer in summer.  It is quite frost resistant if kept dry (hardy to -5° C)

Propagation: Direct sow after last frost.(seldom produces offsets)

 

 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Gymnocalicyum stellatum complex

 

 

 

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.

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