A twining annual vine(Polygonum convolvulus), native to Eurasia but widespread as a weed and having heart-shaped leaves and clusters of small, greenish-white flowers.

• 荞麦蔓，卷茎蓼：一种缠绕的一年生藤本植物（蓼属旋花属），原产于欧亚，但作为一种野草分布很广，有心形叶和小而浅绿色花簇