Cymes dense, corymbose, without bracts and bractlets; abaxial corolla lobe fringed to dentate; nutlets winged, glabrous or with subapical tuft of stiff coarse hairs.

• 浓，伞房状的聚伞花序，没有苞和小苞片；对具牙齿具流苏的背面的花冠裂片；小坚果飞行，无毛或者用近尖端的束硬的粗糙的头发。(9