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

• Gymnocalycium bruchii (Speg.) Hosseus: has blue-green stem to 4 cm in diameter, spines white bristly, flowers to 6 cm wide lavender-white. It's very variable. Distribution: Córdoba and San Luis provinces.
• Gymnocalycium bruchii f. cristata Hosseus: crested form.
• Gymnocalycium bruchii var. glaucum Neuhuber: is larger bodied and larger flowered, with dark glaucous epidermis. Distribution: Córdoba (Los Reartes, northern of Sta. Rosa de Calamuchita)
• Gymnocalycium bruchii var. hossei Backeb.: has brownish spines.
• Gymnocalycium bruchii subs. lafaldense (Vaupel) Neuhuber
• Gymnocalycium bruchii subs. matznetteri (Rausch) Neuhuber: form small growing clumps. Produces shiny white flower.
• Gymnocalycium bruchii var. niveum Rausch: has small bodies covered by white bristly, straight or curved spines. Flowers pale pink the same size (or greater) as the plant bodies. Distribution: Córdoba and San Luis provinces.
• Gymnocalycium bruchii var. niveum f. cristatum hort.
• Gymnocalycium bruchii subs. pawlovskyi Neuhuber: is distinguished by a more columnar habit and pectinate spines. Distribution: Córdoba (between Esperanza end El Camarón, north of Dean Funes)
• Gymnocalycium bruchii f. proliferum hort.: is a cultivated selected strain that branches profusely around the base, and forms soon a very dense mound with dozen of tiny stems. Garden origin.
• Gymnocalycium bruchii subs. susannae Neuhuber: has larger bodied, depressed at the crown and with a pale green epidermis. Distribution: Córdoba (north of Copina).