THE POLLEN TYPE IN CHINESE STERCULIACEAE

The pollen morphology of 59 species belonging to 22 genera of Sterculiaceae in China was studied by LM and SEM.Based on the number,shape and position of the aperture as well as its ornamentation they may be grouped into twelve pollen types;1.Sterculia-type,2.Heritiera-type,3.Waltheria-type,4.Ree-vesia-type,6.Craigia-type,e.Ambroma-type,7.Byttneria-type,8.Dombeya-type,9.Pterospermum-type,10.Helicteres-type 11.Kleinhovia-type and 12.Eriolaena-type.According to the point of view of Palynology,the division of pollen types in Chinese Sterculiaceae is discussed in this paper.