Gymnocalycium

Gymnocalycium

Gymnocalycium baldianium
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Core eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Tribe:	Trichocereeae
Genus:	Gymnocalycium Pfeiff. ex Mittler
Species
About 70, including: Gymnocalycium albiareolatum Gymnocalycium angelae Gymnocalycium anisitsii Gymnocalycium baldianium - Dwarf chin Gymnocalycium bayrianum Gymnocalycium bodenbenderianum Gymnocalycium carminanthum Gymnocalycium castellanosii Gymnocalycium fischeri Gymnocalycium gibbosum Gymnocalycium horstii Gymnocalycium leeanum Gymnocalycium mihanovichii Gymnocalycium netrelianum Gymnocalycium obductum Gymnocalycium ochoterenai Gymnocalycium parvulum Gymnocalycium pflanzii Gymnocalycium quehlianum Gymnocalycium rauschii Gymnocalycium riojense Gymnocalycium rosae Gymnocalycium saglionis - Giant chin Gymnocalycium schroederianum Gymnocalycium spegazzinii Gymnocalycium stellatum Gymnocalycium taningaense Gymnocalycium uruguayense Gymnocalycium nova
Synonyms
Brachycalycium Backeb.

Gymnocalycium, commonly called chin cactus, is a genus of about 70 South American species of cacti. The genus name Gymnocalycium (from Greek, "naked calyx") refers to the flower buds bearing no hair or spines.

Their main area of distribution is Argentina, part of Uruguay, Paraguay, southern Bolivia and part of Brazil. Most species are rather small varying from 4 to 15 centimetres in size. In cultivation they are popular for their easy flowering habits, and the flowers are generally brightly coloured. Where temperatures fall below 10 °C (50 °F) they must be cultivated under glass with heat.^[1]