Region: east Asia, southern China, northern India, Nepal, Bhutan, Myanmar.
Habitat: moist places, usually under shrubs and trees; forests, rocks on slopes; elevations from 3300 to 4200 metres; moderately cold-hardy plant; prefers a fertile well-drained soil in a sunny position; drought tolerant.
BotanyHerb; perennial; 17 to 40 cm tall.
Root: thickened, sometimes stoloniferous rootstock.
Stem: cluster of stems.
Pollination: by bees, lepidoptera, insects.
Use: medicine; food, edible leaves.