The stream bifurcates into two narrow winding channels.

那条小溪分成两股窄而弯曲支流。

Tendril unbranched or bifurcate. Inflorescence usually a polychasium. Seeds elliptic, obovoid-elliptic, or obtriangular, surface smooth, corrugated, or with strumose protuberance or ribs.

卷须不分枝或二叉。通常一多歧聚伞。种子椭圆形，倒卵球形椭圆形，或倒三角形，平滑表面，具皱褶，或具瘤状突起或肋。