Coryphantha difficilis

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	Coryphantha difficilis	CACTUS ART NURSERY Cultivation and Mail Sale of Cacti and Succulents.

This is a very rare strongly spined species Stems are bluish-grey green. Very Beautiful.

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Family: Cactaceae (Cactus Family)

Scientific name: Coryphantha difficilis (Quehl) A.Berger 1929

Synonyms:

Mammillaria difficilis Quehl 1908.
Coryphantha densispina Werdermann in Fedde 1932

Origin: Grows in the Mexican state of Coahuila

Growth Habits: Solitary, spherical to short cylindrical bluish-Gray green stems up to 8 cm tall , 6 cm in diameter.
The tubercles are oblique and their outer end points outwards; 4 central spines, to 3 cm long; 12 to 14 radial spines, up to 2 cm long ( Similarly to Coryphantha salinensis two types of radial spines can be differentiated: lower, stiff, regularly radiating, often only 10 mm long spines and upper, longer (up to 20 mm) often bundled spines.)
The flowers are large purely yellow, without any red in the throat.

Cultivation: In culture, contrary to its name "difficilis" (difficult) this species does not show special problems, but it is very slow-growing. In C.difficilis the observation of the plant development from radial spined youth-forms to the definite, wildly spined outlook is particularly interesting.

All the information and photos in cactus art file are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.