Oreocharis tetrapterus F.Wen, B.Pan & T.V.Do sp. nov. A lateral view of flower B top view of flower C lateral view of corolla and pistil and calyx lobes D adaxial surface of calyx lobes E abaxial surface of calyx lobes F pistil, sepals removed G opened corolla for showing stamens in posterior position H anthers, abaxial view? I adaxial leaf surface J abaxial leaf surface K peduncle indumentum. Photographed by Fang Wen and Bo Pan in the field, charted by Wen-Hua Xu.