Description:similar to P. uniflora in leaflets deeply dissected into few, narrowly lanceolate, and acute teeth, bracts and epicalyx segments usually free of tomentum, and nutlets glabrous. It differs in being a true cushion plant with entire leaves being retained for
Habitat: Cliff ledges and tundra in the alpine and upper subalpine
| Form of cushion | C | Hemispherical (dome shaped) cushion |
| Compactness | 1 | Compact, hard (peat-accumulating) |
| Variability | 0 | No variability |
| Root system | P | Single pivotal root |
| Woodiness | NA | NA |
| Thorniness | 0 | No |
| Succulence | 0 | No |
| Flowers | NA | NA |