Pollens of Polygonum convolvulus P. multiflorum P. cuspidatum were examined by transmission electron microscope and technique of ultrathin section.

• 为此，本文以花粉壁的内部结构为重点，用透射电镜的薄切片技术，对广义蓼属蔓蓼组的4种植物花粉外壁构造的特点进行了观察和研究。