用扫描电镜对不同产地的风藤(Piper kadsura Ohwi)花粉粒进行了研究,发现风藤花粉粒具多型性,其中舟形—单沟型约占43.6～57.1％,扁球形——大型圆孔型占38.6～46.3％,三拟沟型占4.3～10.1％,以前后二者在光镜下被误认作无萌发孔和三歧槽花粉。 Scanning electron microscope (SEM) was used to study the pollen grains of Piper kadsura Ohwi from different habitats. It was found that the pollen grains of E. canadensis were polymorphic, among which the boat-shaped and single-channel type accounted for about 43.6-57.1%, and the oblate spheroids-large round hole. The type accounted for 38.6 to 46.3%, and the Sanguchi type accounted for 4.3 to 10.1%. Previously, the latter two were mistaken for the non-emerging hole and trichiasis pollen under the light microscope.