| Gymnocalycium | |
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| Gymnocalycium baldianium | |
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| Gymnocalycium mihanovichii | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Tribe: | Cereeae |
| Subtribe: | Gymnocalyciinae |
| Genus: | Gymnocalycium Pfeiff. exMittler |
| Species | |
About 70, see article | |
| Synonyms | |
BrachycalyciumBackeb. | |
Gymnocalycium, commonly calledchin cactus, is a genus of about 70South Americanspecies ofcactus. The genus nameGymnocalycium (fromGreek, "naked calyx") refers to the flower buds bearing no hair or spines. In a 2023 classification of the tribeCereeae, it was placed as the only genus in the subtribeGymnocalyciinae, having formerly been placed in the subtribeRebutiinae.[1]
The species of the genusGymnocalycium are low-growing, usually solitary or sometimes small cushion-forming plants with globose, depressed-globular to short-cylindrical stems. The 4 to 15 (rarely more) ribs are usually broadly rounded, often sinuous, occasionally warty, and often have a "chin" just below the areoles. The thorns are very variable.
The diurnal, funnel- or bell-shaped flowers appear at or near the apex. They are white or pink, sometimes yellow or bright red. The flower cup and the corolla are covered with a few large, broad and obtuse scales that have membranous edges. The areoles are bare. The perianth is usually spread.
The stamens form two circles. The first surrounds the nectar chamber, the second is attached near the opening of the corolla. The oblong to spherical fruits are dry or fleshy and spring up in various ways. A permanent flower residue adheres to them. The seeds are very variable. Their color ranges from brown to black, the size from quite small to relatively very large.
In cultivation they are popular for their easy flowering habits, and theflowers are generally brightly colored.[2]
Species of the genusGymnocalycium according toPlants of the World Online as of August 2023[update]:[3]
| Image | Scientific name | Distribution |
|---|---|---|
| Gymnocalycium affineŘepka | Argentina (Córdoba) | |
| Gymnocalycium alboareolatumRausch | Argentina (La Rioja) | |
| Gymnocalycium alenaeKulhánek | Argentina (Córdoba) | |
 | Gymnocalycium amerhauseriH.Till | Argentina (Córdoba) |
 | Gymnocalycium andreae(Boed.) Backeb. & F.M.Knuth | Argentina (Córdoba) |
| Gymnocalycium angelaeMereg. | Argentina (Corrientes) | |
 | Gymnocalycium anisitsii(K.Schum.) Britton & Rose | Bolivia to Paraguay |
| Gymnocalycium × applanatum Řepka & Frélich (G. capillense × G. ochoterenae) | Argentina (Córdoba) | |
 | Gymnocalycium baldianum(Speg.) Speg. | Argentina. |
| Gymnocalycium basiatrumF.Berger, Amerh. & Sedlmeier | Argentina (La Rioja) | |
 | Gymnocalycium bayrianumTill ex H.Till | Argentina (Salta, Tucumán) |
 | Gymnocalycium berchtiiNeuhuber | Argentina (San Luis) |
 | Gymnocalycium bodenbenderianum(Hosseus ex A.Berger) A.Berger | Argentina (to NW. Córdoba) |
 | Gymnocalycium bruchii(Speg.) Hosseus | Argentina (San Luis, Córdoba) |
 | Gymnocalycium cabreraenseSchädlich, Bercht & Melojer | Paraguay |
 | Gymnocalycium calochlorum(Boed.) Y.Itô | Argentina (Córdoba) |
| Gymnocalycium campestreŘepka | Argentina (Córdoba) | |
 | Gymnocalycium capillense(Schick) Hosseus | Argentina (Córdoba, San Luis) |
 | Gymnocalycium castellanosiiBackeb. | Argentina (La Rioja, San Luis) |
| Gymnocalycium chacoenseAmerh. | Bolivia (Santa Cruz) | |
| Gymnocalycium chiquitanumCárdenas | Bolivia. | |
 | Gymnocalycium denudatum(Link & Otto) Pfeiff. ex Mittler | S. Brazil to Argentina (Misiones, Corrientes) |
 | Gymnocalycium erinaceumJ.G.Lamb. | Argentina (Córdoba) |
 | Gymnocalycium esperanzaeŘepka & Kulhánek | Argentina (La Rioja) |
 | Gymnocalycium eurypleurumF.Ritter | Paraguay |
 | Gymnocalycium gibbosum(Haw.) Pfeiff. ex Mittler | Argentina. |
 | Gymnocalycium glaucumF.Ritter | Argentina. |
 | Gymnocalycium horstiiBuining | Brazil (Rio Grande do Sul). |
| Gymnocalycium hossei(F.Haage) A.Berger | Argentina | |
| Gymnocalycium kieslingiiO.Ferrari | Argentina (La Rioja, Santiago del Estero). | |
| Gymnocalycium kroenleiniiR.Kiesling, Rausch & O.Ferrari | Argentina (La Rioja). | |
| Gymnocalycium kuehhasiiNeuhuber & R.Sperling | Argentina (Córdoba). | |
| Gymnocalycium kulhanekiiPapsch | Argentina (Córdoba) | |
| Gymnocalycium marekiorumMilt | Bolivia (Santa Cruz) | |
.jpg) | Gymnocalycium marsoneriFrič ex Y.Itô | Argentina (to Chaco) |
| Gymnocalycium mendozaenseC.A.L.Bercht & Schädlich | Paraguay. | |
 | Gymnocalycium mesopotamicumR.Kiesling | Argentina (Corrientes) |
 | Gymnocalycium mihanovichii(Frič & Gürke) Britton & Rose | Paraguay to Argentina (Chaco, Formosa) |
| Gymnocalycium × momoV.Gapon & Schelkun. (G. monvillei × G. mostii.) | Argentina (Córdoba) | |
 | Gymnocalycium monvillei(Lem.) Pfeiff. ex Britton & Rose | Argentina (to Córdoba) |
 | Gymnocalycium mostii(Gürke) Britton & Rose | Argentina (Córdoba) |
 | Gymnocalycium neuhuberiH.Till & W.Till | Argentina (San Luis) |
 | Gymnocalycium nigriareolatumBackeb. | Argentina (Catamarca, La Rioja) |
 | Gymnocalycium ochoterenaeBackeb. | Argentina (San Luis, Córdoba) |
_(2).jpg) | Gymnocalycium oenanthemumBackeb. | Argentina (Catamarca) |
 | Gymnocalycium paediophylumSchütz | Paraguay. |
 | Gymnocalycium paraguayense(K.Schum.) Hosseus | Paraguay. |
 | Gymnocalycium pflanzii(Vaupel) Werderm. | Bolivia to Paraguay. |
| Gymnocalycium pinaliiMereg. & Kulhánek | Argentina (Córdoba) | |
| Gymnocalycium ponomarevaeV.Gapon & Neuhuber | Argentina (Catamarca) | |
 | Gymnocalycium quehlianum(F.Haage ex H.Quehl) Vaupel ex Hosseus | Argentina (Córdoba). |
 | Gymnocalycium ragoneseiA.Cast. | Argentina (Catamarca, Córdoba) |
 | Gymnocalycium reductum(Link) Pfeiff. ex Mittler | Argentina (Buenos Aires) |
| Gymnocalycium rhodantherum(Boed.) H.Till | Argentina (Salta, La Rioja, San Juan) | |
| Gymnocalycium ritterianumRausch | Argentina (La Rioja). | |
 | Gymnocalycium robustumR.Kiesling, O.Ferrari & Metzing | Argentina (Córdoba: near Quilino) |
 | Gymnocalycium saglionis(Cels) Britton & Rose | Argentina |
| Gymnocalycium sanluisenseNeuhuber | Argentina (San Luis). | |
%2c_collections_of_Yuriy_Shostak%2c_Mykolaiv_01.jpg) | Gymnocalycium schickendantzii(F.A.C.Weber) Britton & Rose | Argentina (San Luis). |
 | Gymnocalycium schroederianumOsten | Argentina to Uruguay. |
 | Gymnocalycium spegazziniiBritton & Rose | Argentina. |
 | Gymnocalycium stenopleurumF.Ritter | SE. Bolivia to N. Paraguay. |
| Gymnocalycium striglianumJeggle ex H.Till | Argentina (Mendoza, San Luis) | |
| Gymnocalycium taningaensePiltz | Argentina (San Luis, Córdoba) | |
 | Gymnocalycium uebelmannianumRausch | Argentina (La Rioja) |
 | Gymnocalycium uruguayense(Arechav.) Britton & Rose | S. Brazil to Uruguay |
| Gymnocalycium victorii Neuhuber | Argentina (San Luis) | |
| Gymnocalycium volskyiV.Gapon, Ponomareva, Protopopov, Schelkun. & Zaitseva | Uruguay |
Their main area of distribution isArgentina, part ofUruguay,Paraguay,Bolivia and part ofBrazil.[3]
Data related toGymnocalycium at Wikispecies
Media related toGymnocalycium at Wikimedia CommonsAuthority control databases: National |
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