Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium monvillei group

• Gymnocalycium monvillei (Lem.) Britton & Rose: Strongly spined species with 7-13 long, curving, stiff yellow translucent radial spines with a red base on a bright green background. (Origin Córdoba province)
• Gymnocalycium monvillei subs. achirasense (H.Till & Schatzl) H.Till: Has 10-12 radial spines almost flat against the plant body (Origin San Luis province)
• Gymnocalycium monvillei subs. brachyanthum (Gürke) H.Till: Has approx. 7 spines (Origin San Luis province)
• Gymnocalycium monvillei subs. horridispinum (G.Frank ex H.Till) H.Till: Has 10-12 strong stiff radial spines.
• Gymnocalycium monvillei var. orientale Neuhuber
• Gymnocalycium monvillei var. steineri H.Till: broom shaped protruding or long intertwined golden-yellow spination. Distribution: Sierra Grande, Cordoba, Argentina.
• Gymnocalycium monvillei f. villamercedense H.Till & Neuhuber: (ssp. monvillei) has globular solitary stems with very developed chin-shaped protuberances without a swollen taproot. Fruits red. Distribution: San Luis, Argentina.
• Gymnocalycium multiflorum (Hook.) Britton & Rose: (same as ssp. monvillei?) Spines 7 to 10, all radial, spreading, somewhat flattened, yellow; flowers pinkish to nearly white. (Origin Córdoba province)
• Gymnocalycium multiflorum var. parisiense (K.Schum.) P.Fourn.: Same as multiflorum, but with whitish or pale yellowish spines. Distribution: Córdoba and San Luis, Argentina