Synonym(s):R. tetragyna Planch.; R. trigyna (Roxb.) Planch.; Linum trigynum Roxb., not L.]
Country of Origin: northern India and China
Habitat: Forests, mountain slopes, thickets, often in calcareous soil
Description: Glabrous subshrub, to 3 feet; leaves elliptic-obovate or oblong-obovate, mucronate, entire to serrulate; flowers 1-2 inches across, petals united into a tube at base, styles 3-5. sometimes erroneously grown as Linum flavum.