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。花序一多歧聚伞花序。种子椭圆，倒卵球椭圆，或倒三角，平滑表面，具皱褶，或具瘤状突起或肋。

The VERL, a giant, unbranched glycoprotein comprising 30% of the VE, exists in the vitelline envelope and fuses with lysin by species-specificity.

鲍卵膜上存溶素受体，它是大不分支糖蛋白分子，占据了卵黄膜30％组分，可以专一性地与溶素相结合。