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Flowers: magenta,
diurnal and
apical.
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Description: Geohintonia
is a
monospecific
genus discovered in 1992.
Stems: Usually
solitary, dark green/brown covered by a
glaucous/grey
pruina, becoming slowly
columnar, up to 10 cm or more, 10 cm in diameter with a
woolly
apex.
Ribs: Numerous and well distinct.
Spines: Few,
triangular, very short,
flat and
corky,
deciduous. Easily detached from the
base.
Flowers: Rich magenta and open during the day;
they are born in
on top
of the plant.
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5 years old seedlings. |
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Cultivation:
not particularly difficult, use a mineral and well drained
substratum, water regularly during the
growing season and let the plant dry in
winter, place in
full sun and ensure good
ventilation. This plant is very slow growing,
seedlings reach 2 cm of diameter in 6/8 years. |
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Photo of conspecific taxa, varieties, forms and
cultivars of Geojintonia mexicana:
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Family:
Cactaceae
(Cactus Family)
Scientific Name:
Geohintonia mexicana
Glass & W. A. Fitz Maurice 1991
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Origin: Mexico (Nuevo
León: Sierra Madre)
Conservation status: Listed in
CITES appendix 2.
Habitat: This plant grows on
gypsum hills on vertical cliff
in the neighbourhood of Rayones. Now this plant is
endangered, the
wild
population of G. mexicana was almost completely wiped out by "collectors".
About
taxonomy: The
Aztekium
Clade (consisting of
Aztekium and
Geohintonia) represents a
relictual, yet highly
specialized
lineage
forming a
sister group to the remaining
taxa of the
tribe Cacteae. It is
suggested that Geohintonia may represent an
intergeneric hybrid
involving Aztekium (probably
A. hintonii which is
sympatric with
Geohintonia ) and possibly Echinocactus horizonthalonius.
Etymology:
The
generic name "Geohintonia"
remembers its discoverer Georges Hinton.
The specific name "mexicana" derives from
the state of "Mexico" the
land of origin of this plant. (The specific name implies “Mexican”)
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This odd cactus is
unmistakable and very distinctive
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2,5 cm (9 ears old)
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Cultivation and Mail Sale 
