Description from Flora of China
Herbs perennial, often woody based. Flowering stems prostrate to erect. Leaves pinnate or palmately 3–5-foliolate; leaflets serrate at apex or margin, rarely entire. Inflorescence a cyme or solitary flower. Flowers usually bisexual, rarely unisexual. Hypanthium saucer-shaped or cupular. Sepals (4 or)5, alternate, persistent; epicalyx segments (4 or)5. Petals (4 or)5, yellow, purple-red, or white. Disk usually markedly broad, rarely not so. Stamens (4 or)5(–10); anthers 2-loculed. Carpels 4–20, free; ovule usually ascending; style sub-basal, lateral, or subterminal. Achenes few, inserted on elevated, dry receptacle. x = 7.
About 20 species: arctic and alpine regions of N hemisphere; 13 species (four endemic) in China.
(Authors: Li Chaoluan (Li Chao-luang); Hiroshi Ikeda, Hideaki Ohba)