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

卷须不分枝二叉。通常的一多歧聚伞。子椭圆，倒卵球椭圆，倒三角的，平滑的表面，具皱褶，具瘤状的突。

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

鲍卵细胞膜上存在细胞溶素受体，它是大的不分支的糖蛋白分子，占据了卵黄膜30％的组分，可以专一性地与细胞溶素相结合。