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Escobaria roseana (SB459
Higueras, Coah. Mexico)
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Description:
Small, soft bodied cacti. They are usually solitary but
sometimes forming small clusters with age.
Stem: Up to 6 cm tall, up to 5 cm in diameter;
Ribs: The ribs have tubercles, with ungrooved areoles.
Spines: 4 to 6 central spines; 15 to 30 radials; whitish-yellow
to rich gold coloured.
Roots: Thick tap root
Flowers: The flowers are at the stem tips, and range from pink
with bronze-rose coloured midveins to cream-yellowish, 2 cm in diameter. |
The flowers appear at the stem apexes and are cream to pink with
bronze-rose midveins.
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Acharagma (Escobaria) roseana SB277 - Los Imagines, Saltillo, Coahuila,
Mexico. |
Cultivation:
Very slow growing. Because of the tap root
they are very rot prone, so use highly gritty compost with much drainage
and water regularly in summer, but do not overwater, it prefer a
completely dry place during winter. An unheated greenhouse would
be perfect. It can survive low temperatures (appr. -7°C).
Full sun to light shade.
Propagation: Easy to propagate from seed or (rarely) cuttings if
available. |
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Origin: Mexico: mountains of south-eastern Coahuila
and adjacent Nuevo León at elevations between 1500 and 2100 m.
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Taxonomy: Acharagma
is a genus formed by only two small species of cacti: A. roseana
and A. aguirreana from northern Mexico. This plants
previously classificated as Escobaria are instead related to
Pediocactus
and Lophophora, DNA sequence clearly support the hypothesis that
acharagma is a distinct ‘good’ genus not closely related to
Escobaria.
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Conservation status: Listed in
CITES appendix 2.
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Synonyms:
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Echinocactus roseanus
Beodeker 1928
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Neolloydia roseana (Beodeker)
F. M. Knuth 1935
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Thelocactus roseanus (Beodeker)
W. T. Marshall 1941
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Escobaria roseana (Beodeker)
F. Buxbaum 1951
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Coryphantha roseana (Beodeker)
Moran 1953
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Gymnocactus roseanus (Beodeker)
Glass et R. Foster 1970
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Escobaria roseana subsp. galeanensis
Haugg 1995
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This
uncommon
cactus, has tiny, soft
egg-shaped stems and will slowly form small clusters with dense golden
spines.
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