Leaf blade abaxially pubescent or tomentose, base cordate; follicles smooth, or longitudinally sinuate-striate or transversely plicate-corrugate.

• 叶片背面短柔毛或者被绒毛，基部心形；折扇状横向的蓇葖果平滑，或者纵向具深波状具条纹的或皱。(3