Origin and Habitat: Argentina, Catamarca, Córdoba

• Gymnocalycium ochoterenae subs. vatteri (Buining) Papsch
• Gymnocalycium vatteri Buining

• Gymnocalycium ochoterenae Backeb.
• Gymnocalycium intermedium Piltz non Hildm.
• Gymnocalycium ochoterenae var. albiflorum Lukašik
• Gymnocalycium ochoterenae var. albispinum hort.
• Gymnocalycium ochoterenae var. cinereum Backeb.
• Gymnocalycium ochoterenae var. longispinum Lukašik
• Gymnocalycium ochoterenae var. polygonum Backeb.
• Gymnocalycium ochoterenae var. scoparium H.Till & Neuhuber
• Gymnocalycium ochoterenae var. tenuispinum Backeb.
• Gymnocalycium ochoterenae var. unguispinum hort.
• Gymnocalycium ochoterenae var. variicolor hort.
• Gymnocalycium ochoterenae var. variispinum Backeb.

• Gymnocalycium ochoterenae subs. vatteri (Buining) Papsch
• Gymnocalycium vatteri Buining
• Gymnocalycium ochoterenae subs. vatteri var. altautinense Papsch
• Gymnocalycium ochoterenae var. altautinense Papsch
• Gymnocalycium vatteri var. altautinense (Papsch) V.Gapon

Description: This is a very slowly growing specie. Generally solitary but old specimens may cluster from the base.
Stem: Flattened with dull grey-green or blue green epidermis, up to 9 cm high 4-10 cm broad (or more in culture)
Ribs:11-14 scarcely prominent.
Areoles: Whit grey wool .
Spines: Stiff and bent to the body, very variable both in length (1 to 2 cm long), cross-section and number ( 1 to 3 in each areole) though some areoles are completely spineless, The most characteristic vatteri form is the one with only 1 spine.
Flowers: 4-5 cm long and 4 cm broad, white with pink to brownish-red throat.
Blooming time: Profuse flowers from late spring to summer.

Bibliography: Major references and further lectures
1) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
2) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011
3) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
4) N. L. Britton, J. N. Rose “The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family.” Volume 4, The Carnegie Institution of Washington, Washington 1923
5) Curt Backeberg “Die Cactaceae: Handbuch der Kakteenkunde” Gustav Fischer Verlag, Stuttgart New York 1982–1985

Cultivation and Propagation: It is a summer grower species that offers no cultivation difficulties. Water regularly in summer (but do not overwater ) keep rather dry in winter. Feed with a high potassium fertilizer in summer. It is quite frost resistant if kept dry (hardy to -5° C) Sun Exposure: Light shade.
Propagation:: Direct sow after last frost.(seldom produces offsets)