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


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Family: Cactaceae (Cactus Family)

Gymnocalycium cardenasianum F.Ritter

Scientific name:   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.)

Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art file are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.