© Valentino Vallicelli
Endangered
CITES App. II
Primary
Gymnocalycium knollii
Piante Grasse 5(1): 29, 1985 n.n. (Not validly described)
Family
Cactaceae
Genus
Species
Gymnocalycium knollii
Author
Mereg.
Chinese genus
裸萼球属
Chinese name
-
DescriptionEdit description
Roots
Tap root.
Spines
3(-5) up to 5 cm long brownish to blackish turning grey as they ages.