| Homalocephala | |
|---|---|
| | |
| Homalocephala polycephala | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Tribe: | Cacteae |
| Genus: | Homalocephala Britton & Rose [1] |
| Type species | |
| Homalocephala texensis | |
| Species | |
See text. | |
Homalocephala is a genus of plants native to Mexico and the United States. [1] In the past, all three species have been considered to be in the genus Echinocactus . [2]
As of June 2025 [update] , Plants of the World Online accepts three species:
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
| | Homalocephala parryi (Engelm.) Vargas & Bárcenas syn. Echinocactus parryi | Devil's cushion | Mexico |
| | Homalocephala polycephala (Engelm. & J.M.Bigelow) Vargas & Bárcenas syn. Echinocactus polycephalus | Cotton top cactus | S. California, S. Nevada, Arizona, Mexico |
| | Homalocephala texensis (Hopffer) Britton & Rose syn. Echinocactus texensis | Horse crippler cactus | SW. Oklahoma to NE. Mexico |