Abstract: The pollen morphology of the Piperaceae varies at the generic level. The surfaces of the pollen grains of Zippelia are smooth, but foveolate, and, under the higher magnifications, slighty rough. Those of the pollen grains of Piper are continuously verrucate and the verruca nearly to smooth. The venucate sculpture on the sur-faces of the pollen grains of Lepianthes (or Pothomorphe) is not distinct. The verrucae on the pollen surfaces of Macropiper are evenly echinate. The pollen grains of Peperonda are inaperturale, the verrucae are surrounded by granellae and small chips. Therefore, pollen morphology has taxonomic significance for the generic segrega-tion of Piperaceae.

Key words: Pollen morphology, Taxonomic signigicance, Piperaceae

摘要： 胡椒科的某些属之间，花粉形态表现出一定的差异。齐头绒属花粉粒表面较为平滑，但有小穿孔（或小穴），略显粗糙。胡椒属的花粉粒表面有不规则的瘤状纹饰，纹饰较为平滑。Lepi-anthes（Pothomorphe）的花粉粒表面瘤状纹饰不显著。Macropiper属花粉粒表面除了胡椒属中出现的那些特征外，更特别的是在瘤状纹饰上有均匀分布的小棘刺（或称小疣）。草胡椒属的花粉粒除了无萌发孔外，表面纹饰则极为特殊，表面瘤突较规则，周围由颗粒或屑片所覆盖。因此，花粉形态特征在胡椒科的属的划分方面有一定的分类学意义。

关键词: 花粉形态, 分类学意义, 胡椒科