Description:spiny usually cushion-forming, sometimes with spreading to ascending stems and then like a shrublet. Leaves awl to bristle-like
Habitat:stony or sandy places, sometimes in shade at 1000-2800m
| Form of cushion | C | Hemispherical (dome shaped) cushion |
| Compactness | 0 | Hollow, with canopy gaps |
| Variability | 0_1 | Intermediate |
| Root system | P | Single pivotal root |
| Woodiness | NA | NA |
| Thorniness | 1 | Yes |
| Succulence | 0 | No |
| Flowers | 2 | Long peduncle |