胡椒科的花粉形态及其分类学意义

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粒为平滑，但有小穿孔，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。Ｌｅｐｉａｎｔｈｅｓ（Ｐｏｔｈｏｍｏｒｐｈｅ）的花粉粒表面瘤状纹饰不显著。

Pollen Morphology and Its Taxonomic Significance of Piperaceae

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 verrucate sculpture on the surfaces 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 Peperomia are inaperturale, the verrucae are surrounded by granellae and small chips. Therefore, pollen morphology has taxonomic significance for the generic segregation of Piperaceae.