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Gymnocalycium cardenasianum "Japanese selection"
(Syn: Gymnocalycium spegazzinii ssp. cardenasianum "Japan selection" )
CACTUSPEDIA       

 


Gymnocalycium cardenasianum
"Japanese selection".
This Japanese selected cultivar has incredibly strong black spines that turn grey as they ages.
 

Description: Solitary, slowly growing cactus, densely covered with incredibly strong twisted spines
Stem: Grey green, compact, globular up to 12 (-15) cm wide 10 cm tall in cultivation (in nature it is partially underground) with a slightly concave woolly apex. Will not (usually) offset.
Spines: Long, stout, eagle claw-shaped, typically-twisted, up to 4 cm long. Black turning dark grey as they ages.
Flowers: Open petaled, funnel-shaped, about 4(-7) cm in diameter, 3(-5) cm tall and pinkish in colour.  They grow near the apex. The flowers of Gymnocalycium cardenasianum have a tough time trying to force themselves through the fierce spines, and is quite rare to see an open flower because the spines prevent the flowers from opening properly.
Blooming season: They will bloom at an early age and bloom sparingly in mid-summer.

Cultivation: Keep this plant almost dry in winter at a minimum temperature of 0C. It prefers a low pH compost; otherwise growth will stop altogether. The plant tolerates extremely bright situations (grow it hard, at a high position in the greenhouse, to try and develop the spines, which are strong and twisted)
but it enjoys some shade during the hottest part of the day in summer.
Propagation: Seeds (seldom produces offsets) or grafting.
 

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

Photo gallery Gymnocalicium

Family: Cactaceae (Cactus Family)

Scientific name:   Gymnocalycium cardenasianum F.Ritter "Japan selection"

Nowadays regarded as: Gymnocalycium spegazzinii Britton & Rose ssp. cardenasianum (F.Ritter) R.Kiesling & Metzing

Etymology: Named "spegazzinii" after Carlos Luis Spegazzini, Italian mycologist and botanist established in Argentina and "cardenasianum" after Prof. M. Cardenas.

Origin:  Bolivia (Tarija)

Conservation status: Listed in CITES appendix 2.


 

 


Photo of conspecific taxa, varieties, forms and cultivars of Gymnocalycium spegazzinii
. (This
Taxon shows a great degree of variation in stem and spines colouration, and also in size depending on the site of origin.)



 

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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