Gymnocalycium

 

Gymnocalycium is a genus of about 70 South American species. Their main area of distribution is Argentine, part of Uruguay, Paraguay, southern Bolivia and part of Brasil. Most species are globose, rather small varying from 1.5 to 6 inches in size (4 cm to 15 cm). They are popular for their easy flowering habits, although the flowers are generally brightly colored. They are also popular for their ease to care for. The genus name "gymnocalycium" comes from the Greek for "naked calyx" referring to the flower buds bearing no hair or spines.

They are sensitive to root mealy bugs

The flowers are pink, pinkish, or occasionally yellow. Only the plants receiving at least half a day of bright light will bloom.

Most species are propagated from seeds that need 70F (21C) minimum to germinate. Some species produces offsets that can also be used.

Species and varieties
Gymnocalycium albiareolatum
Gymnocalycium altagraciense
Gymnocalycium ambatoense
Gymnocalycium amerhauseri
Gymnocalycium andreae
Gymnocalycium andreae ssp. carolinense
Gymnocalycium angelae
Gymnocalycium anisitsii
Gymnocalycium anisitsii ssp. multiproliferum
Gymnocalycium baldianum (Dwarf chin)
Gymnocalycium bayrianum
Gymnocalycium berchtii
Gymnocalycium bodenbenderianum
Gymnocalycium bodenbenderianum ssp. intertextum
Gymnocalycium bruchii
Gymnocalycium bruchii cv. 'Pink Lace'
Gymnocalycium buenekeri
Gymnocalycium calochlorum
Gymnocalycium capillense
Gymnocalycium carminanthum
Gymnocalycium castellanosii
Gymnocalycium catamarcense
Gymnocalycium chiquitanum
Gymnocalycium deeszianum
Gymnocalycium delaetii
Gymnocalycium denudatum (Spider Cactus)
Gymnocalycium erinaceum
Gymnocalycium eurypleurum
Gymnocalycium eytianum
Gymnocalycium gibbosum
Gymnocalycium gibbosum ssp. ferox
Gymnocalycium horstii
Gymnocalycium hossei
Gymnocalycium hybopleurum
Gymnocalycium hyptiacanthum
Gymnocalycium kieslingii
Gymnocalycium leeanum
Gymnocalycium leptanthum
Gymnocalycium mackieanum
Gymnocalycium marsoneri
Gymnocalycium marsoneri ssp. matoense
Gymnocalycium megalothelos
Gymnocalycium mesopotamicum
Gymnocalycium mihanovichii
Gymnocalycium mihanovichii cv. 'Hibotan' (Moon Cactus, Ruby Ball)
Gymnocalycium monvillei
Gymnocalycium monvillei ssp. achirasense
Gymnocalycium monvillei ssp. brachyanthum
Gymnocalycium monvillei ssp. horridispinum
Gymnocalycium mostii
Gymnocalycium mostii var. kurtzianum
Gymnocalycium mucidum
Gymnocalycium netrelianum
Gymnocalycium neuhuberi
Gymnocalycium obductum
Gymnocalycium ochoterenae ssp. herbsthoferianum
Gymnocalycium ochoterenae ssp. vatteri
Gymnocalycium ochoterenai
Gymnocalycium oenanthemum
Gymnocalycium paediophilum
Gymnocalycium paraguayense
Gymnocalycium parvulum
Gymnocalycium pflanzii
Gymnocalycium pflanzii ssp. argentinense
Gymnocalycium pflanzii ssp. dorisiae
Gymnocalycium platense
Gymnocalycium pugionacanthum
Gymnocalycium quehlianum (Rose Plaid Cactus)
Gymnocalycium ragonesei
Gymnocalycium rauschii
Gymnocalycium riojense
Gymnocalycium riojense ssp. kozelskyanum
Gymnocalycium riojense ssp. paucispinum
Gymnocalycium riojense ssp. piltziorum
Gymnocalycium riojense ssp. platygonum
Gymnocalycium ritterianum
Gymnocalycium rosae
Gymnocalycium saglionis (Giant Chin Cactus)
Gymnocalycium saglionis ssp. tilcarense
Gymnocalycium schickendantzii
Gymnocalycium schroederianum
Gymnocalycium schroederianum ssp. bayense
Gymnocalycium schroederianum ssp. paucicostatum
Gymnocalycium spegazzinii
Gymnocalycium spegazzinii ssp. cardenasianum
Gymnocalycium stellatum
Gymnocalycium stellatum ssp. occultum
Gymnocalycium stenopleurum
Gymnocalycium striglianum
Gymnocalycium stuckertii
Gymnocalycium taningaense
Gymnocalycium terweemeanum
Gymnocalycium tillianum
Gymnocalycium uebelmannianum
Gymnocalycium uruguayense
Gymnocalycium achirasense synonym of Gymnocalycium monvillei ssp. achirasense
Gymnocalycium acorrugatum synonym of Gymnocalycium castellanosii
Gymnocalycium alboareolatum synonym of Gymnocalycium albiareolatum
Gymnocalycium antherostele synonym of Gymnocalycium schickendantzii
Gymnocalycium armatum synonym of Gymnocalycium spegazzinii
Gymnocalycium artigas synonym of Gymnocalycium uruguayense
Gymnocalycium asterium synonym of Gymnocalycium stellatum
Gymnocalycium bicolor synonym of Gymnocalycium mostii
Gymnocalycium bozsingianum synonym of Gymnocalycium castellanosii
Gymnocalycium brachyanthum synonym of Gymnocalycium monvillei ssp. brachyanthum
Gymnocalycium calochlorum var. proliferum synonym of Gymnocalycium calochlorum
Gymnocalycium cardenasianum synonym of Gymnocalycium spegazzinii ssp. cardenasianum
Gymnocalycium chubutense synonym of Gymnocalycium gibbosum
Gymnocalycium chuquisacanum synonym of Gymnocalycium pflanzii
Gymnocalycium comaparense synonym of Gymnocalycium pflanzii
Gymnocalycium curvispinum synonym of Gymnocalycium neuhuberi
Gymnocalycium damsii synonym of Gymnocalycium anisitsii
Gymnocalycium damsii var. multiproliferum synonym of Gymnocalycium anisitsii ssp. multiproliferum
Gymnocalycium damsii var. tucavocense synonym of Gymnocalycium anisitsii
Gymnocalycium denudatum var. paraguayense synonym of Gymnocalycium paraguayense
Gymnocalycium ferox synonym of Gymnocalycium castellanosii
Gymnocalycium ferrarii synonym of Gymnocalycium mucidum
Gymnocalycium fricianum synonym of Gymnocalycium marsoneri
Gymnocalycium friedrichii synonym of Gymnocalycium stenopleurum
Gymnocalycium gerardii synonym of Gymnocalycium gibbosum
Gymnocalycium gibbosum var. hyptiacanthum synonym of Gymnocalycium hyptiacanthum
Gymnocalycium glaucum synonym of Gymnocalycium mucidum
Gymnocalycium grandiflorum synonym of Gymnocalycium mostii
Gymnocalycium griseopallidum synonym of Gymnocalycium anisitsii
Gymnocalycium guanchinense synonym of Gymnocalycium hossei
Gymnocalycium guerkeanum synonym of Gymnocalycium uruguayense
Gymnocalycium hamatum synonym of Gymnocalycium marsoneri
Gymnocalycium hammerschmidii synonym of Gymnocalycium chiquitanum
Gymnocalycium horizonthalonium synonym of Gymnocalycium spegazzinii
Gymnocalycium horridispinum synonym of Gymnocalycium monvillei ssp. horridispinum
Gymnocalycium horridispinum var. achirasense synonym of Gymnocalycium monvillei ssp. achirasense
Gymnocalycium horstii var. buenekeri synonym of Gymnocalycium buenekeri
Gymnocalycium hyptiacanthum ssp. schroederianum synonym of Gymnocalycium schroederianum
Gymnocalycium immemoratum synonym of Gymnocalycium mostii
Gymnocalycium intertextum synonym of Gymnocalycium bodenbenderianum ssp. intertextum
Gymnocalycium izozogsii synonym of Gymnocalycium pflanzii
Gymnocalycium joossensianum synonym of Gymnocalycium anisitsii
Gymnocalycium kurtzianum synonym of Gymnocalycium mostii var. kurtzianum
Gymnocalycium lafaldense synonym of Gymnocalycium bruchii
Gymnocalycium lagunillasense synonym of Gymnocalycium pflanzii
Gymnocalycium leeanum var. netrelianum synonym of Gymnocalycium netrelianum
Gymnocalycium loricatum synonym of Gymnocalycium spegazzinii
Gymnocalycium marquezii synonym of Gymnocalycium pflanzii
Gymnocalycium matoense synonym of Gymnocalycium marsoneri ssp. matoense
Gymnocalycium mazanense synonym of Gymnocalycium hossei
Gymnocalycium megatae synonym of Gymnocalycium marsoneri
Gymnocalycium melanocarpum synonym of Gymnocalycium uruguayense
Gymnocalycium michoga synonym of Gymnocalycium schickendantzii
Gymnocalycium mihanovichii var. friedrichii synonym of Gymnocalycium stenopleurum
Gymnocalycium mihanovichii var. stenogonum synonym of Gymnocalycium mihanovichii
Gymnocalycium milaresii synonym of Gymnocalycium pflanzii
Gymnocalycium moserianum synonym of Gymnocalycium bodenbenderianum
Gymnocalycium mostii var. immemoratum synonym of Gymnocalycium mostii
Gymnocalycium multiflorum synonym of Gymnocalycium monvillei
Gymnocalycium multiflorum var. hybopleurum synonym of Gymnocalycium hybopleurum
Gymnocalycium neumannianum synonym of Rebutia neumanniana
Gymnocalycium nidulans synonym of Gymnocalycium hossei
Gymnocalycium nigriareolatum synonym of Gymnocalycium hybopleurum
Gymnocalycium nigriareolatum var. densispinum synonym of Gymnocalycium hybopleurum
Gymnocalycium nigriareolatum var. simoi synonym of Gymnocalycium hybopleurum
Gymnocalycium obductum synonym of Gymnocalycium ragonesei
Gymnocalycium ochoterenae synonym of Gymnocalycium ochoterenai
Gymnocalycium onychacanthum synonym of Gymnocalycium marsoneri
Gymnocalycium ourselianum synonym of Gymnocalycium monvillei
Gymnocalycium pediophilum synonym of Gymnocalycium paediophilum
Gymnocalycium pflanzii var. lagunillasense synonym of Gymnocalycium pflanzii
Gymnocalycium piltziorum synonym of Gymnocalycium riojense ssp. piltziorum
Gymnocalycium piricarpum synonym of Gymnocalycium riojense ssp. piltziorum
Gymnocalycium pirquitense synonym of Gymnocalycium riojense ssp. piltziorum
Gymnocalycium platense var. baldianum synonym of Gymnocalycium baldianum (Dwarf chin)
Gymnocalycium platense var. hyptiacanthum synonym of Gymnocalycium hyptiacanthum
Gymnocalycium platense var. parvulum synonym of Gymnocalycium parvulum
Gymnocalycium platygonum synonym of Gymnocalycium riojense ssp. platygonum
Gymnocalycium proliferum synonym of Gymnocalycium calochlorum
Gymnocalycium proliferum var. calochlorum synonym of Gymnocalycium calochlorum
Gymnocalycium pseudomalacocarpus synonym of Gymnocalycium marsoneri
Gymnocalycium pulquinense synonym of Rebutia neocumingii
Gymnocalycium pulquinense var. corroanum synonym of Rebutia neocumingii
Gymnocalycium pungens synonym of Gymnocalycium schickendantzii
Gymnocalycium reductum synonym of Gymnocalycium gibbosum
Gymnocalycium reductum var. leeanum synonym of Gymnocalycium leeanum
Gymnocalycium reductum var. schatzlianum synonym of Gymnocalycium mackieanum
Gymnocalycium reductum ssp. leeanum synonym of Gymnocalycium leeanum
Gymnocalycium rhodantherum synonym of Gymnocalycium hossei
Gymnocalycium riograndense synonym of Gymnocalycium pflanzii
Gymnocalycium riteranum synonym of Gymnocalycium ritterianum
Gymnocalycium saglione synonym of Gymnocalycium saglionis (Giant Chin Cactus)
Gymnocalycium sanguiniflorum synonym of Gymnocalycium baldianum (Dwarf chin)
Gymnocalycium schatzlianum synonym of Gymnocalycium mackieanum
Gymnocalycium schickendantzii var. delaetii synonym of Gymnocalycium delaetii
Gymnocalycium sigelianum synonym of Gymnocalycium capillense
Gymnocalycium stenogonum synonym of Gymnocalycium mihanovichii
Gymnocalycium sutterianum synonym of Gymnocalycium capillense
Gymnocalycium tilcarense synonym of Gymnocalycium saglionis ssp. tilcarense
Gymnocalycium tobuschianum synonym of Gymnocalycium mostii
Gymnocalycium tortuga synonym of Gymnocalycium marsoneri
Gymnocalycium triacanthum synonym of Gymnocalycium riojense
Gymnocalycium tucavocense synonym of Gymnocalycium anisitsii
Gymnocalycium tudae synonym of Gymnocalycium marsoneri
Gymnocalycium valnicekianum synonym of Gymnocalycium mostii
Gymnocalycium valnicekianum var. bicolor synonym of Gymnocalycium mostii
Gymnocalycium vatteri synonym of Gymnocalycium ochoterenae ssp. vatteri
Gymnocalycium venturianum synonym of Gymnocalycium baldianum (Dwarf chin)
Gymnocalycium vorwerkii synonym of Neowerdermannia vorwerkii
Gymnocalycium weissianum synonym of Gymnocalycium hossei
Gymnocalycium westii synonym of Rebutia fidaiana
Gymnocalycium zegarrae synonym of Gymnocalycium pflanzii

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