Origin and Habitat: Santa Cruz (Salinas de San Jose, Cordillera ) Bolivia.
Altitude: 300-400 metres above sea level.

• Gymnocalycium anisitsii var. griseopallidum H.Till & Amerh.
• Gymnocalycium griseo-pallidum Backeb.

• Gymnocalycium anisitsii (K.Schum.) Britton & Rose
• Echinocactus anisitsii K.Schum.
• Gymnocalycium anisitsii subs. damsii (K.Schum.) G.J.Charles
• Echinocactus damsii K.Schum.
• Gymnocalycium damsii Britton & Rose
• Gymnocalycium anisitsii subs. damsii f. cristatum hort.
• Gymnocalycium damsii f. cristatum hort.
• Gymnocalycium anisitsii subs. damsii f. monstruosum hort.
• Gymnocalycium damsii f. monstruosum hort.
• Gymnocalycium anisitsii subs. damsii f. variegata hort.
• Gymnocalycium damsii f. variegata hort.
• Gymnocalycium anisitsii var. griseopallidum H.Till & Amerh.
• Gymnocalycium griseo-pallidum Backeb.
• Gymnocalycium anisitsii var. tucavocense Backeb. ex H.Till & Amerh.
• Gymnocalycium damsii var. tucavocense Backeb.
• Gymnocalycium damsii var. boosii Amerh.
• Gymnocalycium damsii var. centrispinum Backeb.
• Gymnocalycium damsii subs. evae Halda, Horáček & Milt
• Gymnocalycium damsii var. rotundulum Backeb.
• Gymnocalycium joossensianum Britton & Rose
• Echinocactus joossensianus Boed.

• Gymnocalycium anisitsii subs. multiproliferum (P.J.Braun) P.J.Braun & Esteves
• Gymnocalycium damsii var. multiproliferum P.J.Braun

• Gymnocalycium anisitsii var. tucavocense cv. Red Form
• Gymnocalycium damsii var. tucavocense cv. Red Form

Description: Gymnocalycium griseo-pallidumSN|13315]]SN|13323]] is a small cactus barely rising above ground level, solitary or branching basally in cultivation to form clusters. It differs from Gymnocalycium anisitsiiSN|13323]]SN|13315]] for the paler greyish-green, sharply ribbed stem (usually green and reddish-brown in anisitsii) and for the greenish-white flowers.
Roots: Fibrous roots.
Stem: Spherical-depressed to short cylindrical, up to 10 cm tall, 8-15 cm in diameter, pale greyish-green, pale bluish-green, or pale-brownish-green often with subtle horizontal clear strips.
Ribs: About 10-11, acute, obscurely notched into chin-shape protrusions.
Radial spines: 5-8 up to 12 mm (or more) long, straight or slightly tortuous, short, nearly useless in terms of defence. Young spine are pastel-white or yellowish with a darker tip, later become pale-grey.
Central spines: Usually absent.
Flowers: From the centre, narrow, funnelform, about 6 cm long. External tepals greenish whit reddish margins, internal tepals greenish-white often suffused with pink, spreading. Scales on the ovary and flower tube small, pink and scattered.
Blooming season: It produces flowers almost continuously during the year.
Fruits: Oblong, 2,5 cm long, 6 mm in diameter, reddish at maturity.

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
6) E. W Putnam “GYMNOCALYCIUMS: A Guide for Growers” National Cactus & Succulent Society. Handbook No. 5. 1978