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。通常的序一多歧序。子，倒卵球，或倒三角的，平滑的表面，具皱褶，或具瘤状的突起或肋。