Gymnocalycium
| Gymnocalycium | |
|---|---|
| Gymnocalycium baldianium | |
| 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. ex Mittler |
| Species | |
|
About 70, see article | |
| Synonyms | |
|
Brachycalycium Backeb. | |
Gymnocalycium, commonly called chin cactus, is a genus of about 70 South American species of cactus. The genus name Gymnocalycium (from Greek, "naked calyx") refers to the flower buds bearing no hair or spines. In a 2023 classification of the tribe Cereeae, it was placed as the only genus in the subtribe Gymnocalyciinae, having formerly been placed in the subtribe Rebutiinae.