Abstract:

The diversity of Araceae is shown markedly in its habit, external morphology and phytogeography, as well as in its pollen morphology. The pollen of Araceae is still little known. A comparative small number of species have so far been investigatal. The present paper deals with the pollen InorPhology of seven genera and l8 speies. The pollen grains were all examined under LM and SEM. Among these, four genera (Zentedeschia, Amorphophallus, Typhonium and pinellia) and l7 species are Palynogicall reported here for the first time. The research results have shown tha there are intergeneric and even interspecific differences in pollen shape, size, type of aperture, ornamentation and exine sttucture.

Key words: Diversity, pollen morphology, Araceae.