| Gymnocalycium amerhauseri H. Till |
Accepted |
11 |
| Gymnocalycium andreae (Boed.) Backeb. & F. M. Knuth |
Accepted |
22 |
| Gymnocalycium anisitsii (K. Schum.) Britton & Rose |
Accepted |
11 |
| Gymnocalycium bruchii (Speg.) Hosseus |
Accepted |
22 |
| Gymnocalycium calochlorum (Boed.) Y. Itô |
Accepted |
22 |
| Gymnocalycium castellanosii Backeb. |
Accepted |
11 |
| Gymnocalycium chiquitanum Cárdenas |
Accepted |
11 |
| Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler |
Accepted |
11 |
| Gymnocalycium erinaceum J. G. Lamb. |
Accepted |
11 |
| Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler |
Accepted |
11 |
| Gymnocalycium hossei (F. Haage) A. Berger |
Accepted |
22 |
| Gymnocalycium mesopotamicum R. Kiesling |
Accepted |
11 |
| Gymnocalycium mihanovichii (Frič) Britton & Rose |
Accepted |
11 |
| Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose |
Accepted |
11 |
| Gymnocalycium monvillei subsp. achirasense (H. Till & Schatzl) H. Till |
Accepted |
11 |
| Gymnocalycium mostii (Gürke) Britton & Rose |
Accepted |
11 |
| Gymnocalycium neuhuberi H. Till & W. Till |
Accepted |
11 |
| Gymnocalycium ochoterenae Backeb. |
Accepted |
11 |
| Gymnocalycium ochoterenae subsp. vatteri (Buining) Papsch |
Accepted |
11 |
| Gymnocalycium paediophilum F. Ritter |
Accepted |
11 |
| Gymnocalycium platense (Speg.) Britton & Rose |
Accepted |
11 |
| Gymnocalycium quehlianum (F. Haage) Vaupel ex Hosseus |
Accepted |
11 |
| Gymnocalycium reductum (Link) Pfeiff. & Otto |
Accepted |
22 |
| Gymnocalycium ritterianum Rausch |
Accepted |
11 |
| Gymnocalycium rosae H. Till |
Accepted |
22 |
| Gymnocalycium saglionis (Cels) Britton & Rose |
Accepted |
11 |
| Gymnocalycium saglionis subsp. tilcarense (Backeb.) H. Till & W. Till |
Accepted |
11 |
| Gymnocalycium schickendantzii (F. A. C. Weber) Britton & Rose |
Accepted |
11 |
| Gymnocalycium schroederianum Osten |
Accepted |
11 |
| Gymnocalycium spegazzinii Britton & Rose |
Accepted |
11 |
| Gymnocalycium striglianum Jeggle ex H. Till |
Accepted |
11 |
| Gymnocalycium taningaense Piltz |
Accepted |
11 |
| Gymnocalycium uebelmannianum Rausch |
Accepted |
11 |
| Gymnocalycium boszingianum Schütz |
Unresolved |
11 |
| Gymnocalycium pflanzii var. lagunillasense (Cárdenas) Donald |
Unresolved |
11 |
| Gymnocalycium sigelianum (Schick) Hosseus |
Unresolved |
33 |
| Gymnocalycium sutterianum (Schick) Hosseus |
Unresolved |
11 |
| Gymnocalycium tilcarense (Backeb.) H. Till & W. Till |
Unresolved |
11 |
| Gymnocalycium × heidiae Neuhuber |
Unresolved |
22 |
| Gymnocalycium anisitsii Schum. |
Synonym of Gymnocalycium anisitsii (K. Schum.) Britton & Rose |
11 |
| Gymnocalycium damsii (K. Schum.) Britton & Rose |
Synonym of Gymnocalycium anisitsii subsp. damsii (K. Schum.) G. J. Charles |
11 |
| Gymnocalycium riojense subsp. kozelskyanum Schütz ex H. Till & W. Till |
Synonym of Gymnocalycium bodenbenderianum (Hosseus) A. Berger |
11 |
| Gymnocalycium riojense subsp. piltziorum Schütz ex H. Till & W. Till |
Synonym of Gymnocalycium bodenbenderianum (Hosseus) A. Berger |
11 |
| Gymnocalycium riojense var. guasayanense Strigl |
Synonym of Gymnocalycium bodenbenderianum (Hosseus) A. Berger |
11 |
| Gymnocalycium andreae f. svecianum Pazout ex W. Till |
Synonym of Gymnocalycium bruchii (Speg.) Hosseus |
22 |
| Gymnocalycium bruchii var. brigittae Piltz |
Synonym of Gymnocalycium bruchii (Speg.) Hosseus |
22 |
| Gymnocalycium bruchii var. niveum Rausch |
Synonym of Gymnocalycium bruchii (Speg.) Hosseus |
22 |
| Gymnocalycium proliferum (Backeb.) Backeb. |
Synonym of Gymnocalycium calochlorum (Boed.) Y. Itô |
22 |
| Gymnocalycium ferox (Backeb.) Slaba |
Synonym of Gymnocalycium castellanosii Backeb. |
11 |
| Gymnocalycium acorrugatum J. G. Lamb. |
Synonym of Gymnocalycium castellanosii subsp. acorrugatum (J. G. Lamb.) R. Kiesling & Metzing |
11 |
| Gymnocalycium leeanum (Hook.) Britton & Rose |
Synonym of Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler |
11 |
| Gymnocalycium borthii Koop ex H. Till |
Synonym of Gymnocalycium gibbosum subsp. borthii (Koop) G. J. Charles |
11 |
| Gymnocalycium buenekeri Swales |
Synonym of Gymnocalycium horstii subsp. buenekeri (Swales) P. J. Braun & Hofacker |
22 |
| Gymnocalycium ambatoense Piltz |
Synonym of Gymnocalycium hybopleurum (K. Schum.) Backeb. |
11 |
| Gymnocalycium nigriareolatum Backeb. |
Synonym of Gymnocalycium hybopleurum (K. Schum.) Backeb. |
11 |
| Gymnocalycium uruguayense (Arechav.) Britton & Rose |
Synonym of Gymnocalycium hyptiacanthum subsp. uruguayense (Arechav.) Mereg. |
22 |
| Gymnocalycium friedrichii (Werderm.) Pazout |
Synonym of Gymnocalycium mihanovichii (Frič) Britton & Rose |
11 |
| Gymnocalycium mihanovichii var. filadelfiense Backeb. |
Synonym of Gymnocalycium mihanovichii (Frič) Britton & Rose |
11 |
| Gymnocalycium monvillei (Lem.) Britton & Rose |
Synonym of Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose |
11 |
| Gymnocalycium monvillei subsp. brachyanthum (Gürke) H. Till |
Synonym of Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose |
11 |
| Gymnocalycium monvillei var. kainradliae Neuhuber |
Synonym of Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose |
11 |
| Gymnocalycium monvillei var. orientale Neuhuber |
Synonym of Gymnocalycium monvillei (Lem.) Pfeiff. ex Britton & Rose |
11 |
| Gymnocalycium horridispinum G. Frank ex H. Till |
Synonym of Gymnocalycium monvillei subsp. horridispinum (G. Frank) H. Till |
11 |
| Gymnocalycium ferrarii Rausch |
Synonym of Gymnocalycium mucidum Oehme |
11 |
| Gymnocalycium glaucum F. Ritter |
Synonym of Gymnocalycium mucidum Oehme |
11 |
| Gymnocalycium ochoterenae subsp. herbsthoferianum H. Till & Neuhuber |
Synonym of Gymnocalycium ochoterenae Backeb. |
11 |
| Gymnocalycium paraguayense (K. Schum.) Schütz |
Synonym of Gymnocalycium paraguayense (K. Schum.) Hosseus |
22 |
| Gymnocalycium berchtii Neuhuber |
Synonym of Gymnocalycium parvulum (Speg.) Speg. |
22 |
| Gymnocalycium zegarrae Cárdenas |
Synonym of Gymnocalycium pflanzii subsp. zegarrae (Cárdenas) G. J. Charles |
11 |
| Echinocactus quehlianus F. Haage ex H. Quehl |
Synonym of Gymnocalycium platense (Speg.) Britton & Rose |
11 |
| Gymnocalycium schatzlianum Strigl & W. Till |
Synonym of Gymnocalycium platense (Speg.) Britton & Rose |
11 |
| Gymnocalycium catamarcense f. belense H. Till & W. Till |
Synonym of Gymnocalycium pugionacanthum Backeb. ex H. Till |
11 |
| Gymnocalycium catamarcense f. ensispinum H. Till & W. Till |
Synonym of Gymnocalycium pugionacanthum Backeb. ex H. Till |
11 |
| Gymnocalycium obductum Piltz |
Synonym of Gymnocalycium ragonesei A. Cast. |
11 |
| Gymnocalycium stellatum var. obductum (Piltz) H. Till & W. Till |
Synonym of Gymnocalycium ragonesei A. Cast. |
11 |
| Gymnocalycium saglione (Cels) Britton & Rose |
Synonym of Gymnocalycium saglionis (Cels) Britton & Rose |
11 |
| Gymnocalycium pungens Fleisch. |
Synonym of Gymnocalycium schickendantzii (F. A. C. Weber) Britton & Rose |
11 |
| Gymnocalycium delaetii (K. Schum.) Hosseus |
Synonym of Gymnocalycium schickendantzii subsp. delaetii (K. Schum.) G. J. Charles |
11 |
| Gymnocalycium schroederianum subsp. schroederianum |
Synonym of Gymnocalycium schroederianum Osten |
11 |
| Gymnocalycium cardenasianum F. Ritter |
Synonym of Gymnocalycium spegazzinii subsp. cardenasianum (F. Ritter) R. Kiesling & Metzing |
11 |