Gymnocalycium Pfeiffer, Cat. Hort. Schel. ex Pfeiff. & Otto, Abbild. Kakteen, 2. t. 12 (1844), 1845

Gymnocalycium achirasense H. Till & S. Schatzl, Kuas 25, 1979

Gymnocalycium achirasense v. orientale Mesa Garden cat. 2001 

Gymnocalycium acorrugatum J.G. Lambert, Succulenta, 67 (1): 4, 1988

Gymnocalycium albiflorum n.n. K. Knize 

Gymnocalycium albispinum Backeberg, Cactus ABC 285, 1935

Gymnocalycium alboareolatum W. Rausch, Succulenta, 64 (10): 213, 1985

Gymnocalycium alboareolatum v. ramosum W. Rausch, Gymnocalycium, 3 (2): 31, 1990

Gymnocalycium altagraciense n.n. J. Piltz nn  1982

Gymnocalycium ambatoense J. Piltz, Kuas 10, 1980

Gymnocalycium amboyense  

Gymnocalycium amerhauseri H. Till, Gymnocalycium 7 (3): 133, 1994

Gymnocalycium amoenum H. Till, Gymnocalycium 7 (2): 125, 1994

Gymnocalycium andreae (Boedecker) Backeberg, M DKG 210; (Boed.) Backeb. & F. M. Knuth in Kaktus-ABC 285, 1935, 1930

Gymnocalycium andreae f. svecianum Pazout, Gymnocalycium, 5 (2): 66, 1995

Gymnocalycium andreae ssp. andreae  

Gymnocalycium andreae ssp. carolinense Neuhuber, Gymnocalycium 7 (3): 129, 1994

Gymnocalycium andreae v. grandiflorum Krainz & Andreae, Kakteen (H. Krainz) 4: C VIe., 1957

Gymnocalycium andreae v. longispinum  

Gymnocalycium angelae M. Meregalli, Kakteen und Andere Sukkulenten 49 (12): 287, 1998

Gymnocalycium anisitsii (K. Schumann) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 159-161, f. 168, 1922

Gymnocalycium anisitsii ssp. anisitsii 

Gymnocalycium anisitsii ssp. multiproliferum (P.J. Braun) P.J. Braun & E. Esteves Pereira, Succulentes (France) 74 (3): 131, 1995

Gymnocalycium antherosacos n.n. F. Ritter 

Gymnocalycium antherostele F. Ritter, Kakteen in Suedam. 475, 1980

Gymnocalycium armatum F. Ritter, Kakteen in Suedam. 662, 1980

Gymnocalycium artigas Herter, Rev. s. Am. Bot. 10, 1951

Gymnocalycium asterium Castell., Rev. Fac. Cienc. Agrar. Mendoza, 6. 2; cf. Gray Herb. Card Cat., 1957

Gymnocalycium asterium v. echinoideum

Gymnocalycium asterium v. minimum Pazout 

Gymnocalycium asterium v. minutum

Gymnocalycium asterium v. paucispinum Backeberg, Kakteenlexikon 164., 1966

Gymnocalycium asterium v. triacanthum

Gymnocalycium azureum n.n. Uhlig cat. 3272 

Gymnocalycium bahiensis n.n.

Gymnocalycium baldianum (Spegazzini) Spegazzini, Anales de Sociedad Cientifica Argentina 94: 135, 1925

Gymnocalycium baldianum v. albiflorum C.A.L. Bercht, Gymnos, 11 (21): 6, 1994

Gymnocalycium bayensis n.n.

Gymnocalycium bayrianum Till, Kuas 222, 1967

Gymnocalycium bayrianum v. brevispinum

Gymnocalycium berchtii Neuhuber, Gymnocalycium 10 (3): 219, 1997

Gymnocalycium bicolor Schuetz, Friciana 2, 2, 1962

Gymnocalycium bicolor v. simplex

Gymnocalycium blossfeldii n.n.

Gymnocalycium bodenbenderianum (Hosseus) A.W. Hill, Kakteen 221, 341, 1929

Gymnocalycium bodenbenderianum ssp. bodenbenderianum

Gymnocalycium bodenbenderianum ssp. intertextum (Backeberg ex H. Till) H. Till, Gymnocalycium, 6 (1): 83: 1993

Gymnocalycium bodenbenderianum v. intermedium

Gymnocalycium bolivianum

Gymnocalycium borthii Koop, Kuas 25, 1976

Gymnocalycium bozsingianum Schuetz, Kaktusy 8, 124, 1977

Gymnocalycium brachyanthum (Guerke) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 159, 1922

Gymnocalycium brachypetalum Spegazzini, C. Nuev. Not. Cactol. 55, 1925

Gymnocalycium brevispinum Uhlig cat. 1048 

Gymnocalycium brevistylum F. Ritter 

Gymnocalycium bruchii (Spegazzini) Hosseus, Revista Centro Estud. Farm. 2 (6): 16, 22, 1926

Gymnocalycium bruchii f. albispinum (Backeberg) Till 

Gymnocalycium bruchii f. cristata Hoss, Revista Centro Estud. Farm. 2, no. 6: reprint p. 24, fig. 10., 1926

Gymnocalycium bruchii f. evolvens Oehme 

Gymnocalycium bruchii v. brigittae J. Piltz, Succulenta, 66 (10): 213, 1987

Gymnocalycium bruchii v. enorme Oehme 

Gymnocalycium bruchii v. hossei Backeberg 

Gymnocalycium bruchii v. niveum W. Rausch, Succulenta, 68 (9): 180, 1989

Gymnocalycium buenekeri G.J. Swales, CSJGB 97, 1978

Gymnocalycium calochlorum (Boedeker) Y. Ito, M. DKG 260; Cacti 1952: 90 1952, 1932

Gymnocalycium calochlorum v. proliferum (Backeberg) Backeberg, Cactaceae (Backeberg) 3:, 1959

Gymnocalycium capillaense (Schickendantz) Hosseus, Revista Cent. Estud. Farm. Cordoba 2 (6): 16, 22, 1926

Gymnocalycium cardenasianum P. F. Ritter, Taxon 13: 144, 1964

Gymnocalycium cardenasianum f. armatum (F. Ritter) H. Till & Amerhauser, Gymnocalycium 12 (4): 308. [Oct 1999], 1999

Gymnocalycium cardenasianum v. horridispinum

Gymnocalycium cardenasii n.n. F. Ritter 

Gymnocalycium carminanthum H. Borth & H. Koop, Kakteen und Andere Sukkulenten 27 (4): 73, 1976

Gymnocalycium carminanthum v. montanum Slaba, Kaktusy (Brno) 35: 8 (3-9). 1999

Gymnocalycium carrizalensis n.n. K. Knize KK 715 

Gymnocalycium castellanosii Backeberg, Kakteen ABC, 207, 1935

Gymnocalycium castellanosii v. armillatum J. Piltz, Gymnos, 9 (18): 48, 1993

Gymnocalycium castellanosii v. bozsingianum (Schuetz) J. Piltz, Gymnos, 9 (18): 43: 1993

Gymnocalycium catamarcense H. Till & W. Till, Gymnocalycium 8 (1): 142, 1995

Gymnocalycium catamarcense f. belense H. Till & W. Till, Gymnocalycium, 8 (1): 144, 1995

Gymnocalycium catamarcense f. ensispinum H. Till & W. Till, Gymnocalycium, 8 (1): 143, 1995

Gymnocalycium catamarcense f. montanum H. Till & W. Till, Gymnocalycium, 8 (1): 143, 1995

Gymnocalycium catamarcense ssp. acinacispinum H. Till & W. Till, Gymnocalycium, 8 (1): 146, 1995

Gymnocalycium catamarcense ssp. catamarcense

Gymnocalycium catamarcense ssp. schmidianum H. Till & W. Till, Gymnocalycium, 8 (1): 145, 1995

Gymnocalycium centeterium n.n. Hosseus, Revist. Cent. Estud. Farm. Cordoba, 2. No. 6, reimpr. p. 22; cf. GrayHerb. Card Cat., Issue 130, 1926

Gymnocalycium chacoense Amerhauser, Gymnocalycium 12 (4): 302 (301-304, figs.). [Oct 1999], 1999

Gymnocalycium chiquitanum Cárdenas, Cactus (Paris) 78: 95, 1963

Gymnocalycium chloranthum hyb. Putnam  1968

Gymnocalycium chlorosticum n.n. F. Ritter FR 1181 

Gymnocalycium chrysacanthion (K. Schumann) H. Blossfeld, Cact. & Succ. Journ., Amer. 7. 154, in obs., 1936

Gymnocalycium chubutense (Spegazzini) Speg, C. Nuev. Not. Cact. 57, 1925

Gymnocalycium chuquisacanum Cárdenas, J. CSA 146, 1966

Gymnocalycium cintiense (Cárdenas) Hutchison, Nat. Cact. & Succ. Journ. 14. 38, 1959

Gymnocalycium comarapense Backeberg, Die Cactaceae 1775, 1959

Gymnocalycium cumingii (Britton & Rose) Hutchison, Nat. Cact. & Succ. Journ. 14. 38, 1959

Gymnocalycium curvispinum Fric, Mollers Deutsch. Gartner-Zeit., 44. 170, in obs., 1929

Gymnocalycium curvispinum v. acuticostatum

Gymnocalycium curvispinum v. cristata

Gymnocalycium damsii (K. Schumann) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 163, f. 175, 1922

Gymnocalycium damsii v. centrispinum Backeberg, Descr. Cact. Nov. 3: 6., 1963

Gymnocalycium damsii v. multiproliferum P.J. Braun, Kakteen und Andere Sukkulenten 42 (10): 230, 1991

Gymnocalycium damsii v. robural

Gymnocalycium damsii v. roseiflorum FR 1179a 

Gymnocalycium damsii v. rotundulum Backeberg, Descr. Cact. Nov. 3: 6., 1963

Gymnocalycium damsii v. torulosum Backeberg, Descr. Cact. Nov. 3: 6., 1963

Gymnocalycium damsii v. tucavocense Backeberg, Descr. Cact. Nov. 3: 6., 1963

Gymnocalycium deeszianum Doelz, Kakteenkunde 54, 1943

Gymnocalycium delaetii Hosseus, Revist. Cent. Estud. Farm. Cordoba, 2. No. 6, reimpr. p. 22; cf. GrayHerb. Card Cat., Issue 130, 1926

Gymnocalycium denudatum (Link & Otto) Pfeiffer, Abb. Beschr. Cact. 2, 1828

Gymnocalycium denudatum v. argentinense Y. Ito, The Cactaceae: 378, without type, 1981

Gymnocalycium denudatum v. backebergii Pazout 

Gymnocalycium denudatum v. brasiliense  

Gymnocalycium denudatum v. paraguayense 

Gymnocalycium denudatum v. wagnerianum

Gymnocalycium depressum Osten 

Gymnocalycium doppianum n.n. Uhlig cat. 3537 

Gymnocalycium eluhilton 

Gymnocalycium erinaceum J.G. Lamb., Succulenta (Netherlands) 64 (3): 66, 1985

Gymnocalycium erinaceum v. paucisquamosum J. Piltz, Gymnos, 11 (21): 14, 1994

Gymnocalycium esposteo

Gymnocalycium euchlorum Backeberg 

Gymnocalycium eurypleurum F. Ritter, Kakteen in Suedam. 268, 1979

Gymnocalycium eytianum Cárdenas, Kakteen und Andere Sukkulenten 9: 25, 1958

Gymnocalycium famatimensis n.n. W. Rausch 

Gymnocalycium ferocior n.n. Uhlig Cat. 1040 

Gymnocalycium ferox (Backeberg) Slaba, Kaktusy, cf. Repert. Pl. Succ. (I. O. S.), 20 (4): 80, basionym not validly publ.; 35: 4 (1985): 1984

Gymnocalycium ferox v. ferocior (Backeberg) Slaba, Kaktusy, cf. Repert. Pl. Succ. (I. O. S.), 20 (4): 83, basionym not validly publ.; 35: 4 (1985): 1984

Gymnocalycium ferrarii W. Rausch, Kuas 6, 1981

Gymnocalycium fidaianum (Backeberg) Hutchison, Cact. & Succ. Journ. Amer. 29. 11, in obs., 1957

Gymnocalycium fleischerianum Backeberg, Die Cactaceae 3, 1703, 1959

Gymnocalycium fleischerianum v. anoplum Y. Ito, The Cactaceae: 380, without type, 1981

Gymnocalycium fricianum Plesnik, Kuas 110, 1964

Gymnocalycium friedrichiae n.n. Abbey Brook Cat.1956 

Gymnocalycium friedrichii (Werdermann) Pazout, Blueh. Kakteen 113; Friciana Rada 4 (23): 3-19, 1936

Gymnocalycium friedrichii cv. aurea

Gymnocalycium friedrichii cv. Hibotan Watanabe 

Gymnocalycium friedrichii n.n. bolivianum HU 313 

Gymnocalycium friedrichii n.n. chacoanus HU 311 

Gymnocalycium friedrichii n.n. mendozaense HU 312 

Gymnocalycium friedrichii v. albiflorum (Pazout) Schuetz, Friciana, cf. G. D. Rowley in Repert. Pl. Succ. (I. O. S.), 51: 15, 17, 24; 31: 6 (1980 publ. 1982): 1980

Gymnocalycium friedrichii v. angustostriatum

Gymnocalycium friedrichii v. moseranum Pazout, W Swiecie Kakt.,: 25 (1971), as 'moserianum'., 1970

Gymnocalycium friedrichii v. pirarettaense (Pazout) Pazout 

Gymnocalycium froehlichianum (K. Schumann) Osten, An. Mus. Hist. Nat. Montevideo, Ser. 2, 5. No. 1, 77; vide Gray Herb. Card Cat., 1941

Gymnocalycium fucarosense 

Gymnocalycium genseri n.n. B 42 

Gymnocalycium gerardii (Böd) Y. Ito, The Cactaceae: 399, basionym not validly publ.: 1981

Gymnocalycium gibbosum (Haworth) Pfeiffer ex Mittler, Syn. Pl. Succ. 173; Abbildungen und Beschreibung bluhender Kakteen 2: sub pl. 1 1845, 1812

Gymnocalycium gibbosum f. cerebriforme (Spegazzini) W. Papsch, Gymnocalycium, 9 (4): 201, as 'cerebriformis': 1996

Gymnocalycium gibbosum f. cerebriformis (Spegazzini) Papsch, Gymnocalycium 9: 201., 1996

Gymnocalycium gibbosum n.n. caespitosum intermedium Fleischer 

Gymnocalycium gibbosum ssp. ferox (Labour. ex Ruempler) Papsch, Gymnocalycium, 9 (4): 201: 1996

Gymnocalycium gibbosum ssp. gibbosum 

Gymnocalycium gibbosum v. brachypetalum (Spegazzini) W. Papsch, Gymnocalycium, 9 (4): 201: 1996

Gymnocalycium gibbosum v. caespitosum Fric ex Fleischer 

Gymnocalycium gibbosum v. caespitosum minimum Fleischer

Gymnocalycium gibbosum v. chubutense (Spegazzini) W. Papsch, Gymnocalycium, 9 (4): 201: 1996

Gymnocalycium gibbosum v. fenellii 

Gymnocalycium gibbosum v. gerardii

Gymnocalycium gibbosum v. hyptiacanthum (Lemaire) Y. Ito, Cacti (Borg), 89. 1952, 1952

Gymnocalycium gibbosum v. leucodictyon (K. Schumann) Y. Ito 

Gymnocalycium gibbosum v. nigrum Backeberg, Cactaceae (Backeberg) 3:, 1959

Gymnocalycium gibbosum v. nobile (Haworth) Y. Ito 

Gymnocalycium gibbosum v. nobilis (Haworth) Borg 

Gymnocalycium gibbosum v. pleuricostatum

Gymnocalycium gibbosum v. schlumbergerii (K. Schumann) Y. Ito 

Gymnocalycium glaucum F. Ritter, Sukkulentenkunde 7/8, 37, 1963

Gymnocalycium glaucum v. plurispinum F. Ritter 

Gymnocalycium glaucum v. recurvum

Gymnocalycium grandiflorum Backeberg, Kaktus ABC, 289, 1935

Gymnocalycium griseo-pallidum Backeberg, Kakteenlexicon 167, 1966

Gymnocalycium griseum n.n. Southwest cat 240/82 

Gymnocalycium guanchinense Schuetz, Sukkulentenkunde 2, 32, 1948

Gymnocalycium guanchinense v. robustus

Gymnocalycium guanchinense v. tinogastense

Gymnocalycium guerkeanum (Heese) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 154-155, f. 161, 1922

Gymnocalycium guerkeanum v. roseiflorum

Gymnocalycium hamatum F. Ritter & Y. Ito, Kakteen in Suedam. 2, 663, 1980

Gymnocalycium hammerschmidii Backeberg, Descr. Cact. 3, 7, 1963

Gymnocalycium hennisii hyb. (x quehlianum) 

Gymnocalycium heuschkelianum hyb.

Gymnocalycium horizonthalonium Fric, Mollers Deutsch. Gartner-Zeit., 44. 254, fig., 1929

Gymnocalycium horridispinum G. Frank, Kuas 8, 1963

Gymnocalycium horridispinum ssp. achirasense orientale

Gymnocalycium horridispinum v. achirasense (H. Till & Schatzl) Lodé, Cact. Aventures, cf. Repert. Pl. Succ. (I. O. S.), 27: 29; 46: 11 (1995 publ. 1996): 1995

Gymnocalycium horridispinum v. bicolor

Gymnocalycium horridispinum v. brevispinum

Gymnocalycium horstii A.F.H. Buining, Kakteen und Andere Sukkulenten 21: 162, 1970

Gymnocalycium horstii v. buenekeri A.F.H. Buining 

Gymnocalycium hossei (Haage) A. Berger, Kakteen 226, 341, 1929

Gymnocalycium hossei v. crassispinum Y. Ito, The Cactaceae: 394, without type, 1981

Gymnocalycium hossei v. longispinum Hort 

Gymnocalycium hybopleurum (Schumann) Backeberg, Gesamtb. der Kakteen 405, 1898

Gymnocalycium hybopleurum v. breviflorum Backeberg, Kakteenlexikon 168., 1966

Gymnocalycium hybopleurum v. centrispinum Backeberg, Kakteenlexikon 168., 1966

Gymnocalycium hybopleurum v. euchlorum Backeberg 

Gymnocalycium hybopleurum v. ferocior Backeberg, Kakteenlexikon 168., 1966

Gymnocalycium hybopleurum v. ferox Backeberg, Kakteenlexikon 168., 1966

Gymnocalycium hybopleurum v. longispinum

Gymnocalycium hyptiacanthum (Lemaire) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 156-157, 1922

Gymnocalycium hyptiacanthum v. citriflorum (Fric) Schuetz 

Gymnocalycium immemoratum A. Castellanos & H.V. Lelong, Lilloa 4 (2): 195, la|4m. 2, 1939

Gymnocalycium intermedium hyb. (denudat. X monvill) Hildmann 

Gymnocalycium intermedium n.n. J. Piltz cat. 113  1898

Gymnocalycium intertextum Backeberg, Kakteenlexicon 169, 1966

Gymnocalycium izozogsii Cárdenas, Cact. Succ. J. USA 145, 1966

Gymnocalycium joossensianum (Boedeker) Britton & Rose, Monatschr. fuer Kakteenk. 40; The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 166 1922, 1918

Gymnocalycium karwinskyanum n.n.

Gymnocalycium kieslingii O. Ferrari, Cactus and Succulent Journal [U. S. ] 57: 244, 1985

Gymnocalycium kieslingii f. alboareolatum O. Ferrari, Cact. Succ. J. (U. S. A.), 57 (6): 246, 1985

Gymnocalycium kieslingii f. castaneum O. Ferrari, Cact. Succ. J. (U. S. A.), 57 (6): 246, 1985

Gymnocalycium knebelii n.n. Fric 

Gymnocalycium knolii n.n. Uhlig cat. 2832  1983

Gymnocalycium kozelskyanum Schuetz, Kaktusy 57, 1966

Gymnocalycium kurtzianum (Guerke) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 163, f. 174, 1922

Gymnocalycium kurtzianum v. longispinum

Gymnocalycium lafaldense D. Vaupel, Zeitschrift fuer Sukkulentenk. 192, 1924

Gymnocalycium lafaldense f. albispinum (Backeberg) Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: 30. 1941, 1941

Gymnocalycium lafaldense f. deviatum Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: [31], fig. 3. 1941, 1941

Gymnocalycium lafaldense f. enorme Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: [31], fig. 4. 1941, 1941

Gymnocalycium lafaldense f. evolvens Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: [31], fig. 5. 1941, 1941

Gymnocalycium lafaldense f. fraternum Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: [31], fig. 6. 1941, 1941

Gymnocalycium lafaldense f. hossei (Backeberg) Oehme, Jahrb. Deutsch. Kakteen-Ges., pt. 1: 29. 1941, 1941

Gymnocalycium lagunillasense Cárdenas, Kuas 22, 1958

Gymnocalycium leeanum (Hooker) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 154, f. 164, 1922

Gymnocalycium leeanum v. brevispinum Backeberg 

Gymnocalycium leeanum v. netrelianum (Monv) Backeberg, Kaktus-ABC 290., 1935

Gymnocalycium leeanum v. roseiflorum Y. Ito, Explan. Diagr. Austroechinocactinae 293., 1957

Gymnocalycium leptanthum (Spegazzini) Spegazzini, Anales de Sociedad Cientifica Argentina 49: 138, 1925

Gymnocalycium longiflorum n.n. Uhlig cat. 2833 

Gymnocalycium longispinum Uhlig cat. 3222 

Gymnocalycium loricatum Spegazzini, Anal. Mus. Nac. B. Aires 502, 1905

Gymnocalycium lumbrerasense n.n. F. Ritter 

Gymnocalycium mackieanum (Hooker) Metzing et al., Allionia 33: 209, 1995

Gymnocalycium malacocarpum

Gymnocalycium marquezii Cárdenas, Kuas 11, 1985

Gymnocalycium marquezii v. argentinense Backeberg, Kakteenlexikon 169., 1966

Gymnocalycium marsoneri Fric ex Y. Ito, Expl. Diagr. 175, 1957

Gymnocalycium marsoneri ssp. marsoneri

Gymnocalycium marsoneri ssp. matoense (A.F.H. Buining & A.J. Brederoo) P.J. Braun & E. Esteves Pereira, Succulentes (France) 74 (3): 131, 1995

Gymnocalycium matoense A.F.H. Buining & A.J. Brederoo, Kuas 265, 1975

Gymnocalycium mazanense Backeberg, Kakteenfreund 133, 1932

Gymnocalycium mazanense v. breviflorum Backeberg 

Gymnocalycium mazanense v. ferox Backeberg 

Gymnocalycium mazanense v. polycephalum

Gymnocalycium mazanense v. rhodantherum (Boedeker) Backeberg, Kaktus-ABC 291., 1935

Gymnocalycium megalothelos (Sencke) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 162, pl. 18, f. 1; f. 173, 1922

Gymnocalycium megatae Y. Ito, Expl. Diagr. 175, 293, 1957

Gymnocalycium megatae v. piricarpum

Gymnocalycium meglothelos (Sencke) Britton & Rose, Gesamtbeschr. der Kakteen 514, 1898

Gymnocalycium melanocarpum (Arechavaleta) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 161-162, f. 171, 1922

Gymnocalycium melocactiforme Pazout, Kaktusarske Listy 4, 30, 1948

Gymnocalycium mesopotamicum R. Kiesling, Cact. Succ. J. GB 39, 1980

Gymnocalycium michoga (Fric) Y. Ito, Expl. Diagr. 175, 1957

Gymnocalycium microspermum n.n. K. Knize cat. 1738 

Gymnocalycium mihanovichii (Fric, Guerke) Britton & Rose, Monatschr. fuer Kakteenk. 142; The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 153-154, f. 159 1922, 1905

Gymnocalycium mihanovichii f. nigrum Y. Ito, The Cactaceae: 409, without type, 1981

Gymnocalycium mihanovichii n.n. chlorosticum F. Ritter 

Gymnocalycium mihanovichii v. albiflorum Pazout, Friciana 111/17: 5., 1963

Gymnocalycium mihanovichii v. angusto-striatum Pazout 

Gymnocalycium mihanovichii v. filadelfiense Backeberg, Kakteenlexikon 170., 1966

Gymnocalycium mihanovichii v. fleischerianum Pazout 

Gymnocalycium mihanovichii v. friedrichii Werdermann, Repert. Spec. Nov. Regni Veg. Sonderbeih. C Lief. 29, tab. 113. Werd. Bluh. Kakt. & suk. Pflanzen, 1936

Gymnocalycium mihanovichii v. melocactiforme Pazout 

Gymnocalycium mihanovichii v. moserianum Pazout 

Gymnocalycium mihanovichii v. pazoutianum G. Moser, Valincek 

Gymnocalycium mihanovichii v. piraretaense Pazout 

Gymnocalycium mihanovichii v. rysanekianum Pazout 

Gymnocalycium mihanovichii v. stenogonum Pazout ex Fric 

Gymnocalycium mihanovichii v. stenostriatum Pazout 

Gymnocalycium millaresii Cárdenas, Cact. Succ. J. USA 144, 1966

Gymnocalycium mirabile n.n. Uhlig cat. 3351 

Gymnocalycium monvillei (Lemaire) Pfeiffer ex Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 161, f. 169, 170, 1922

Gymnocalycium monvillei f. villamercedense H. Till & Neuhuber, Gymnocalycium 6 (3): 105, 1993

Gymnocalycium monvillei ssp. achirasense (H. Till & Schatzl) H. Till, Gymnocalycium 6 (3): 102, 1993

Gymnocalycium monvillei ssp. brachyanthum (Guerke) H. Till, Gymnocalycium 6 (3): 102, 1993

Gymnocalycium monvillei ssp. gertrudae (Neuhuber) Neuhuber, Gymnocalycium 6 (4): 110, 1993

Gymnocalycium monvillei ssp. horridispinum (G. Frank ex H. Till) H. Till, Gymnocalycium 6 (3): 102, 1993

Gymnocalycium monvillei ssp. monvillei  

Gymnocalycium monvillei v. chacrasense Neuhuber, Gymnocalycium 6 (3): 105, 1993

Gymnocalycium monvillei v. coloratum Neuhuber, Gymnocalycium 12 (2): 285 (-286, fig.). 1999

Gymnocalycium monvillei v. confusa Neuhuber, Gymnocalycium 12 (2): 286., 1999

Gymnocalycium monvillei v. echinatum Neuhuber, Gymnocalycium 6 (4): 108, 1993

Gymnocalycium monvillei v. grandiflorum (Backeberg) H. Till, Gymnocalycium, 3 (3): 38: 1990

Gymnocalycium monvillei v. kainradliae Neuhuber, Gymnocalycium 6 (4): 107, 1993

Gymnocalycium monvillei v. orientale Neuhuber, Gymnocalycium 6 (3): 103, 1993

Gymnocalycium monvillei v. steineri H. Till, Gymnocalycium, 3 (3): 39, 1990

Gymnocalycium moserianum Schuetz, Kaktusy 28, 1966

Gymnocalycium moserianum knollii

Gymnocalycium moserianum v. laejera

Gymnocalycium mostii (Guerke) Britton & Rose, Addisonia; colored illustrations and popular . 3: 5, 1918

Gymnocalycium mostii v. genseri

Gymnocalycium mostii v. kurtzianum (Guerke) Backeberg, Kaktus-ABC 292., 1906

Gymnocalycium mucidum Oehme, Kakt. u. Sukkulent., 197., 1937

Gymnocalycium multiflorum (Hooker) Britton & Rose, Bot. Mag. 71, pl. 4181, 1918

Gymnocalycium multiflorum n.n. paraguayense

Gymnocalycium multiflorum v. albispinum (Schumann) Backeberg, Cactees & Pl. Grasses 44. Encycl. Prat. Nat. 28, 1935

Gymnocalycium multiflorum v. hybopleurum P. Fourn., Cactees & Pl. Grasses 44., 1935

Gymnocalycium multiflorum v. parisiense (Schumann) Backeberg, Cactees & Pl. Grasses 44. Encycl. Prat. Nat. 28, 1935

Gymnocalycium neocumingii (Backeberg) Hutchison, Cact. & Succ. Journ. Amer. 29. 14, in obs., 1957

Gymnocalycium netrelianum (Monville) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 154, f. 160, 1922

Gymnocalycium neuhuberi H. Till & W. Till, Gymnocalycium 5 (1): 59, 1992

Gymnocalycium neumannianum (Backeberg) Hutchison, Cact. & Succ. Journ. Amer. 29. 11, in obs., 1957

Gymnocalycium nidulans Backeberg, Cactus ABC 293, 1935

Gymnocalycium nigriareolatum Backeberg, Blatter fuer Kakteenforsch. 5, 1934

Gymnocalycium nigriareolatum f. carmineum H. Till, Gymnocalycium, cf. Repert. Pl. Succ. (I. O. S.), 11 (3): 254-255; 49: 18 (1998 publ. 1999), 1998

Gymnocalycium nigriareolatum v. densispinum Backeberg, Gymnocalycium, cf. Repert. Pl. Succ. (I. O. S.), 11 (3): 255-256; 49: 18 (1998 publ. 1999), 1998

Gymnocalycium nigriareolatum v. simoi H. Till, Gymnocalycium, cf. Repert. Pl. Succ. (I. O. S.), 11 (3): 258; 49: 18 (1998 publ. 1999), 1998

Gymnocalycium nigrum Backeberg 

Gymnocalycium obductum J. Piltz cat. 121  1990

Gymnocalycium occultum Fric ex Schuetz, Friciana 4, 1962

Gymnocalycium ochoterenae ssp. herbsthoferianum H. Till & Neuhuber, Gymnocalycium 5 (4): 75, 1992

Gymnocalycium ochoterenae ssp. ochoterenae

Gymnocalycium ochoterenae ssp. vatteri (A.F.H. Buining) Papsch, Gymnocalycium 6 (1): 79, 1993

Gymnocalycium ochoterenae v. altautenense W. Papsch, Gymnocalycium 6 (1): 79, 1993

Gymnocalycium ochoterenae v. polygonum Backeberg, Kakteenlexikon 171., 1966

Gymnocalycium ochoterenae v. scoparium H. Till & Neuhuber, Gymnocalycium 5 (4): 74, 1992

Gymnocalycium ochoterenae v. tenuispinum Backeberg, Kakteenlexikon 171., 1966

Gymnocalycium ochoterenae v. variispinum Backeberg, Kakteenlexikon 172., 1966

Gymnocalycium ochoterenai Backeberg, Cactus ABC 293, 1935

Gymnocalycium ochoterenai v. cinereum Backeberg, Kaktus-ABC 417., 1935

Gymnocalycium ochoterenai v. polygonum Backeberg 

Gymnocalycium ochoterenai v. scoparium 

Gymnocalycium ochoterenai v. tenuispinum Backeberg 

Gymnocalycium ochoterenai v. variispinum Backeberg 

Gymnocalycium odoratum n.n.

Gymnocalycium oehmianum n.n. Bercht (ilustr.)  1983

Gymnocalycium oenanthemum Backeberg, Blaetter fuer Kakteenforsch. 9, 1934

Gymnocalycium onychacanthum Y. Ito, Expl. Diagr. 175, 1957

Gymnocalycium ottonis Hosseus, Revist. Cent. Estud. Farm. Cordoba, 2. No. 6, reimpr. P. 16; cf. GrayHerb. Card Cat., Issue 130., 1926

Gymnocalycium ourselianum (Monville) Y. Ito, Back., Die Cactaceae 3, 1749, 1959

Gymnocalycium paediophilum F. Ritter, Kaktusy 100, 1977

Gymnocalycium paediophylum B. Schutz, Kaktusy, 13 (5): 100, 1977

Gymnocalycium pampagrandensis

Gymnocalycium paraguayense (Schumann) Schuetz, Monatschr. fuer Kakteenk. 93, 1903

Gymnocalycium parisense Schumann 

Gymnocalycium parvulum (Spegazzini) Spegazzini, Anales de Sociedad Cientifica Argentina 49: 141, 1925

Gymnocalycium parvulum v. amoenum H. Till, Gymnocalycium, 7 (2): 125, 1994

Gymnocalycium pazoutianum J.J. Halda, Acta Mus. Richnov. Sect. Nat., 5 (4): 164, 1998

Gymnocalycium pflanzii (D. Vaupel) Werdermann, Zeitschrift fuer Kakteenk. 83, 1923

Gymnocalycium pflanzii f. chuquisacanum (Cárdenas) Donald, Nation. Cact. Succ. J. (UK.). 26 (4): 100, 1971

Gymnocalycium pflanzii ssp. argentinense H. Till & W. Till, Kakt. And. Sukk., 39 (12): 277, 1988

Gymnocalycium pflanzii ssp. dorisiae Amerhauser, Gymnocalycium, cf. Repert. Pl. Succ. (I. O. S.), 11 (4): 267-268; 49: 18 (1998 publ. 1999), 1998

Gymnocalycium pflanzii v. albipulpa F. Ritter, Kakteen in Südamerika, 2: 660, 1980

Gymnocalycium pflanzii v. comarapense KK 492 

Gymnocalycium pflanzii v. eytianum (Cárdenas) Donald, Nation. Cact. Succ. J. (U. K.). 26 (4): 100, 1971

Gymnocalycium pflanzii v. izozogsii (Cárdenas) Donald, Nation. Cact. Succ. J. (U. K.). 26 (4): 100, 1971

Gymnocalycium pflanzii v. lagunillasense (Cárdenas) J.D. Donald, Nation. Cact. Succ. J. (U. K.), 26 (4): 100, 1971

Gymnocalycium pflanzii v. marquezii

Gymnocalycium pflanzii v. microspermum KK 1738 

Gymnocalycium pflanzii v. millaresii (Cárdenas) Don., Nation. Cact. Succ. J. (U. K.). 26 (4): 100, 1971

Gymnocalycium pflanzii v. paraguayense H. Till & H. Amerhauser, Gymnocalycium, 13 (1): 347 (2000),

Gymnocalycium pflanzii v. riograndense (Cárdenas) Don., Nation. Cact. Succ. J. (U. K.), 26 (4): 100, 1971

Gymnocalycium pflanzii v. saipinense

Gymnocalycium pflanzii v. tominense

Gymnocalycium pflanzii v. zegarrae (Cárdenas) Don., Nation. Cact. Succ. J. (U. K.), 26 (4): 100, 1971

Gymnocalycium pilcomayoense n.n.

Gymnocalycium piltziorum Schuetz, Kuas 144, 1982

Gymnocalycium piricarpum Uhlig cat. 1553 

Gymnocalycium platense (Spegazzini) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 163-164, pl. 18, f. 2; pl 19, f. 1; f. 176, 177, 178, 1922

Gymnocalycium platense v. hyptiacanthum (Lemaire) Backeberg, Kaktus-ABC 294., 1935

Gymnocalycium platense v. parvulum (Spegazzini) Y. Ito, Cacti (Borg), 89. 1952, 1952

Gymnocalycium platense v. ventanicola (Spegazzini) R. Kiesling, Succulenta, 67 (11): 237: 1988

Gymnocalycium platygonum n.n. (H. Till & W. Till) J. Pilbeam, Gymnocalycium: collector's guide: 123, basionym ref. not clearly indicated: 1995

Gymnocalycium poeschlii Neuhuber, Gymnocalycium 12 (3): 297 (295-300, fig.). 1999

Gymnocalycium polycephalum n.n. J. Piltz cat. 223 

Gymnocalycium polygonum

Gymnocalycium prolifer (Boedeker) Backeberg, Blatter Kakteenforsch., No. 1, p. [5], 1936

Gymnocalycium proliferum (Backeberg) Backeberg, Backeb. & F. M. Knuth, Kaktus-ABC, 294., 1935

Gymnocalycium proliferum v. calochlorum (Boedeker) Backeberg, Kaktus-ABC 295., 1935

Gymnocalycium pseudocastellanosii

Gymnocalycium pseudoeurypleurum

Gymnocalycium pseudohorridispinum

Gymnocalycium pseudo-malacocarpum Backeberg, Kakteenlexicon 172, 1966

Gymnocalycium pseudonobile Uhlig cat. 1703 

Gymnocalycium pseudoragonesii n.n.

Gymnocalycium pseudosaglione

Gymnocalycium pseudostriglianum

Gymnocalycium pseudotillianum

Gymnocalycium pseudovatteri

Gymnocalycium pugionacanthum Backeberg, Kakteenlexicon 172, 1966

Gymnocalycium pulquinense (Cárdenas) Hutchinson, Cact. & Succ. Journ. Amer. 29. 13, in obs., 1957

Gymnocalycium pulquinense v. corroanum (Cárdenas) P. C. Hutchison, Cact. Succ. J. (Los Angeles) 29: 13., 1957

Gymnocalycium pungens Fleischer, Friciana 1, 1962

Gymnocalycium quehlianum (F. Haage jr.) D. Vaupel, Monatschr. fuer Kakteenk. 43, 1899

Gymnocalycium quehlianum v. albispinum Bozsing, Cactaceae (Backeberg) 3:, 1959

Gymnocalycium quehlianum v. depressum

Gymnocalycium quehlianum v. flavispinum Bozsing, Cactaceae (Backeberg) 3:, 1959

Gymnocalycium quehlianum v. kleinianum W. Rausch Cat. 103b 

Gymnocalycium quehlianum v. rinconadensis

Gymnocalycium quehlianum v. rolfianum Schickendantz, Sukkulentenkunde 2: 26, fig., 1948

Gymnocalycium quehlianum v. stellatum (Spegazzini) Doelz, Sukkulentenkunde 6: 30., 1957

Gymnocalycium quehlianum v. zantnerianum Schickendantz, Sukkulentenkunde 2: 25, fig., 1948

Gymnocalycium ragonesei A. Castellanos, Lilloa 23: 5, f. 1, 1950

Gymnocalycium rauschii H. Till & W. Till, Succulenta (Netherlands) 69: 27, 1990

Gymnocalycium reductum Pfeiffer & Otto, Abbild. Kakteen, 2. t. 12,

Gymnocalycium reductum v. leucodictyon (Rümpler) W. Papsch, Gymnocalycium, 10 (4): 230: 1997

Gymnocalycium rhodantherum Boedeker 

Gymnocalycium riograndense Cárdenas, Kuas 24, 1958

Gymnocalycium riojense Fric ex Pazout, Kaktusy 132, 1991

Gymnocalycium riojense ssp. kozelskyanum Schuetz ex H. Till & W. Till, Gymnocalycium 4 (3): 52, 1991

Gymnocalycium riojense ssp. paucispinum Backeberg, Gymnocalycium 4 (4): 55, 1991

Gymnocalycium riojense ssp. piltziorum Schuetz ex H. Till & W. Till, Gymnocalycium 4 (3): 51, 1991

Gymnocalycium riojense ssp. riojense

Gymnocalycium riojense v. guasayanense F. Strigl, Ernstia 4 (4): 57, 1991

Gymnocalycium riojense v. guthianum H. Till & W. Till, Gymnocalycium 4 (2): 49, 1991

Gymnocalycium riojense v. mirandaense H. Till & W. Till, Gymnocalycium 4 (3): 53, 1991

Gymnocalycium riojense v. pipanacoense H. Till & W. Till, Gymnocalycium 4 (2): 50, 1991

Gymnocalycium riojense v. platygonum Schultz ex H. Till & W. Till, Gymnocalycium 4 (4): 56, 1991

Gymnocalycium riojense v. sanjuanense H. Till & W. Till, Gymnocalycium 4 (3): 54, 1991

Gymnocalycium riteranum W. Rausch, Kakt. And. Sukk., 23 (7): 180, as 'ritterianum'., 1972

Gymnocalycium ritterianum W. Rausch, Kakteen und Andere Sukkulenten 23 (7): 180, 1972

Gymnocalycium rolfianum n.n.

Gymnocalycium rosae H. Till, Gymnocalycium 8 (3): 160, 1995

Gymnocalycium rosanthemum hyb. Koehres cat. 662/84 

Gymnocalycium roseiacanthum Hort. 

Gymnocalycium rotundicarpum Fric 

Gymnocalycium rubriflorum hyb.

Gymnocalycium saglione (Cels) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 157, pl. 17, f. 1; f. 165, 1922

Gymnocalycium saglionis (Cels) Schuetz, Port. Hort. 180, 1847

Gymnocalycium saglionis n.n. boliviensis Cárdenas 

Gymnocalycium saglionis ssp. saglionis

Gymnocalycium saglionis ssp. tilcarense (Backeberg) H. Till & W. Till, Gymnocalycium, 10 (2): 215: 1997

Gymnocalycium saglionis v. albispinus

Gymnocalycium saglionis v. jujuyense Backeberg, Kaktusar 5: 106., 1934

Gymnocalycium saglionis v. roseispinum FR 51 

Gymnocalycium saglionis v. tucuman

Gymnocalycium saipiense n.n. K. Knize cat. 736 

Gymnocalycium sanguiniflorum (Werdermann) Werdermann, Monatschr. der DKG 194, 1932

Gymnocalycium sanluisense

Gymnocalycium schatzlianum F. Strigl & W. Till, Kakt. And. Sukk., 36 (12): 252, 1985

Gymnocalycium schickendantzii (F.A.C. Weber) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 164-165, pl. 19, f. 2; f. 179, 181, 1922

Gymnocalycium schickendantzii v. delaetii (Schumann) Backeberg 

Gymnocalycium schroederianum Osten, Anal. Mus. Hist. Nat. Mont. 60, 1941

Gymnocalycium schroederianum ssp. bayense R. Kiesling, Cact. Succ. J. (U. S. A.), 59 (2): 48, 1987

Gymnocalycium schroederianum ssp. paucicostatum R. Kiesling, Cact. Succ. J. (U. S. A.), 59 (2): 49, 1987

Gymnocalycium schroederianum ssp. schroederianum

Gymnocalycium schuetzianum H. Till & S. Schatzl, Kuas 234, 1981

Gymnocalycium seminudum n.n. Fric 

Gymnocalycium sigelianum (Schickendantz) Berger, Moellers D. Gaertnerzeit. 201, 1923

Gymnocalycium spegazzinii Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 155, 1922

Gymnocalycium spegazzinii ssp. cardenasianum (F. Ritter) R. Kiesling & Metzing, Darwiniana, 34 (1-4): 404: 1996

Gymnocalycium spegazzinii ssp. spegazzinii

Gymnocalycium spegazzinii v. horizonthalonius Fric 

Gymnocalycium spegazzinii v. major Backeberg

Gymnocalycium spegazzinii v. punillense H. Till & W. Till, Gymnocalycium 7 (1): 119, 1994

Gymnocalycium spegazzinii v. tortispinum Y. Ito, The Cactaceae: 391, without type, 1981

Gymnocalycium stellatum (Spegazzini) Spegazzini ?(Scheidweiler) Spegazzini, Cact. Plant. Tent. 505, 1905

Gymnocalycium stellatum ssp. occultum Fric ex H. Till & W. Till, Gymnocalycium, 9 (2): 176, 1996

Gymnocalycium stellatum ssp. stellatum

Gymnocalycium stellatum v. albispinum

Gymnocalycium stellatum v. flavispinum Bozsing ex H. Till & W. Till, Gymnocalycium, 9 (1): 172, 1996

Gymnocalycium stellatum v. kleinianum W. Rausch ex H. Till & W. Till, Gymnocalycium, 9 (1): 171, 1996

Gymnocalycium stellatum v. minimum (Pazout) Strong, Nation. Cact. Suc. J. (U. K.), 30 (2): 49, 1975

Gymnocalycium stellatum v. obductum (J. Piltz) H. Till & W. Till, Gymnocalycium, 9 (1): 174: 1996

Gymnocalycium stellatum v. paucispinum (Backeberg) Strong, Nation. Cact. Succ. J. (U. K.), 30 (2): 50, 1975

Gymnocalycium stellatum v. zantnerianum (H. Schick) H. Till & W. Till, Gymnocalycium, 9 (1): 169: 1996

Gymnocalycium stenopleurum F. Ritter, Kakteen in Suedamerika 265, 1979

Gymnocalycium striglianum Jeggle, Kuas 267, 1973

Gymnocalycium stuckertii (Spegazzini) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 165-166, f. 180, 1922

Gymnocalycium subg. Gymnocalycium

Gymnocalycium subg. Macrosemineum D. Metzing, Gymnos 9 (17): 4, 1992

Gymnocalycium subg. Pirisemineum H. Till & M. Hesse, Pl. Syst. Evol., 149 (1-2): 151., 1985

Gymnocalycium sutterianum (Schickendantz) Berger, Moellers D. Gaertnerz. 201, 1923

Gymnocalycium taningaense J. Piltz, Kakteen und Andere Sukkulenten 41 (2): 22-26, 1990

Gymnocalycium terweemeanum (Teucq ex Duursma) Borgmann & J. Piltz, Repertorium Plantarum Succulentarum 13 (25-26): 47, 1997

Gymnocalycium tilcarense (Backeberg) Schuetz, Monatschr. DKG 2, 3, 1942

Gymnocalycium tilleanum W. Rausch, Kakteen und Andere Sukkulenten 21: 66, 1970

Gymnocalycium tillianum W. Rausch, Kuas 66, 1970

Gymnocalycium tobuschianum Schick-Freiburg, Cact. Succ. Journal GB 44, 1953

Gymnocalycium tobuschianum v. polycentralis

Gymnocalycium tominense n.n. K. Knize cat. 1684 

Gymnocalycium tortuga Hort. 

Gymnocalycium tortulosum

Gymnocalycium triacanthum Backeberg, Die Cactaceae 3, 1730, 1959

Gymnocalycium tudae Y. Ito, Expl. Diagr. 175, 293, 1957

Gymnocalycium tudae v. bolivianum F. Ritter, Kakteen in Sudamerika 2: 663, 1980

Gymnocalycium tudae v. izozogsii

Gymnocalycium tudae v. pseudomalacocarpus (Backeberg) J.D. Donald, Nation. Cact. Succ. J. (U. K.), 26 (4): 100, 1971

Gymnocalycium tudae v. viridis A.B. Lau 

Gymnocalycium uebelmannianum W. Rausch, Succulenta 62, 1972

Gymnocalycium uruguayense (Arechavaleta) Britton & Rose, The Cactaceae; descriptions and illustrations of plants of the cactus family 3: 162, 1922

Gymnocalycium uruguayense v. roseiflorum (Fric) Y. Ito, Explan. Diagr. Austroechinocactinae 293., 1957

Gymnocalycium valnicekianum Jajo, Kaktusar 73, 1934

Gymnocalycium valnicekianum v. polycentrale

Gymnocalycium vatteri A.F.H. Buining, Succulenta 65, 1950

Gymnocalycium venturi Fric ex Backeberg & F. M. Knuth, Backeb. & F. M. Knuth, Kaktus-ABC, 296, in syn., 1935

Gymnocalycium venturianum Backeberg & Y. Ito, Kaktus ABC 296, 1935

Gymnocalycium villamercedense n.n. F. Ritter 

Gymnocalycium villosum Pfeiffer ex Foerst., Handb. Cact. ed. I. 297,

Gymnocalycium vorwerkii (Fric) Hutchison, Nat. Cact. & Succ. Journ. 14. 38, 1959

Gymnocalycium wagnerianum

Gymnocalycium weissianum Backeberg, Kaktus ABC 296, 1935

Gymnocalycium weissianum v. atroroseum Backeberg, Cactaceae (Backeberg) 3:, 1959

Gymnocalycium weissianum v. cinerascens Backeberg 

Gymnocalycium westii Hutchison, Cact. & Succ. Journ. Amer. 29. 11., 1957

Gymnocalycium williamsii n.n.

Gymnocalycium zegarrae Cárdenas, Kuas 21, 1950

Gymnocalycium zegarrae v. saipinense