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。通序一多歧聚伞序。子，倒卵球，或倒三角，平滑表面，具皱褶，或具瘤状突起或肋。