| Place of origin:
Mexico, state of Hidalgo.
Description: The species have small stem,
of about 10 cm. high. It can be found densely clumped by its
base or by the side.
The tubercles measure about 5 mm. long and its base is a little
woolly.
The radial spines are between 12 and 14. They are between
5 and 9 mm. long, are arranged as a star and are of cream
color but soon to become white.
The central spines are between 3 and 5. Its color varies between
clear and dark brown, and they measure up to 1.5 cm. long.
The flowers are of whitish or of clear yellow color and they
measure approximately 1.7 cm. long and 1.3 cm. wide. The flowering
does not take place until the plant have three years.
The fruit is orange and measures 1 cm. long.
There are varieties like fragilis, even better known than
the type species, smaller and with central spines of white
color with the brown extremity; and pulchella, a little thinner,
with smaller amount of radial spines, and without central
thorns.
Growing tips: Propagation is made easily
by cuttings or by rooting offsets. It resists cold well if
it is dry.
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