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A. myriostigma var.
strongylogonum (a Japanese selected specimen)
This variety has a wavy and corrugated surface and shows
alternating furrows down the body, the ribs are fat and rounded.
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Description:
Astrophytum myryostigma var. strogylogonum differs from the
other typical myriostigmas for the 5 fat ribs that are always
rounded and noticeably curved. With age horizontal furrows will mark the
sides of the ribs as well the midline line between the edges of two
contiguous ribs is characteristically ondulated.
The stems is also usually darker green, strong, compact and flat.
Flowers: The flowers are larger and purely yellow.
Remarks: This variety is very popular among Japanese cactus
fanciers, which selected beautiful plants with enhanced “strogylogonum”
trait. There is also a pure green
form (lacking the white
hairy scales) that has been classified as:
Astrophytum myriostigma var. strongylogonum subvar. nudum
(Rob.Mey.) Backeb.
Cultivation: It is
relatively easy to grow. Use mineral well permeable substratum (rot
prone). Water sparingly from March till
October and keep perfectly dry in winter at
temperatures from 5 to 15 degrees centigrade. (but it
is Hardy to -5°C for short periods) In
the rest period no high atmospheric humidity!!
Sun Exposure: Light shade to full sun.
Propagation: They can be propagated from seed.
Photo of conspecific
taxa, varieties, forms and cultivars of Astrophytum myriostigma:
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