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.
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