Leaflets obovate, oblong, broadly elliptic, oblanceolate, or spatulate, abaxially not maculate; connective apical appendage scarcely visible; plants monoecious.

• 小叶倒卵形的，长圆形，宽椭圆形，倒披针形，或匙形，背面不具斑点；药隔顶端附属物几乎不可见；植株雌雄同株。(19