Astrophytum myriostigma var. nudum
This form is without the white tufted characteristics, so it is
'nude', which in this case means smooth green.
A. myriostigma nudum is very similar to the other myriostigma, it
only deviate from the well-known typical form for lacking or mostly
white flecks, giving a bright green, blue-green, gray-green or
mauve-green color overall depending on clones.
It is by some considered an extreme form of the subspecies potosinus.
Stem: Spherical to shortly columnar with age. The stems is
smooth and can be over 120 cm tall and 5-10 cm in diameter and are
shaped like a bishop's headpiece or a star.
Ribs: The number of ribs vary from 3 to 8 (usually 5).
Flowers: 5 cm in length, pale-yellow, silk-shining
white-spotted plant, occasionally with an orange gloom.
Blooming season: Spring or early summer, They take up to 6 years
Fruits: Dry, dehisces towards the apex
forming about 5 star shaped lobes. With few seeds.
Type with shiny, sharp, thin ribs.
with fat rounded
A form with white woolly areoles.
A. myriostigma (ssp. potosinum) forma nuda
Cultivation: Although regarded as a choice and difficult
plant is not too difficult in a
although grows quite slowly.
It is sometime seen as a grafted plant but grows very well on its own
roots too. Use mineral well permeable
with little organic matter (peat, humus). Water sparingly
from March till
if the weather is sunny enoughand)
, with a little
perfectly dry in winter
at temperatures from 5 to
15 degrees centigrade.
(but it is relatively cold resistant and
hardy to -7° (-10°)C
for short periods) In the rest period no high atmospheric humidity!!
light shade to full sun
this help to keep the plants
healthy, although slow
Propagation: Almost exclusively by seed that germinate rapidly.
Plants are sometimes grafted onto column-shaped cacti.
Blooms are like those of the standard myriostigmas
cultivar "Maiden's blush"