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Gymnocalycium spegazzinii var major.
It is an "European" variety selected
originally from plants with open cluster of long and strong
spines.
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Family:
Cactaceae (Cactus
Family) Gymnocalycium
spegazzinii var. major Backbg.
nomen nudum
Scientific name:
Gymnocalycium spegazzinii Britton
& Rose
Pubblished in: The Cactaceae; descriptions and
illustrations of plants of the cactus family 3: 155, 1922
Origin:
Garden origin (Nursery
selected form)
Conservation status: Listed in
CITES appendix 2.
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Description: This plant is
an extreme form of this very variable rich in forms species, but it is
not justified the attribution of the rank of variety.
The plants that are today in cultivation with the name “Major”
are plants with high
homozygosis levels derived from the first selected specimens
originally used to describe the new form. This plants was at first
multiplied asexually or by
controlled pollination, so they remained - generations by generation
- almost unchanged in appearance. So the initial extreme types with the
long strongly open cluster of spines involuntary began in the course of
time to be cultivated and is now in our collections as good form. A
whole series of such "European” form and variety of cacti is now
recognized, however in nature plants shows - in the same place too - all
their intermediate forms and passages and grow one to each other.
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Cultivation: Keep this plant almost dry in winter at a minimum
temperature of 0°C, prefer a
low pH
compost otherwise
growth will stop altogether. The plant tolerate
extremely bright situations but enjoy some shade during
the hottest part of the day in summer.
Propagation: Seeds (seldom produces offsets)
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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