In order to better grasp the characteristics of the pollen morphology of the genus Michelia Linnaeus and to discuss the taxonomic significance,pollens from 16 species in 5 sections of Michelia Linnaeus were observed by scanning electron microscope,and then the data of morphological and size characters of the pollens were collected and analyzed.Eight of the species,M.wilsonii,M.coriacea,M.amabilis,M.spaerantha,M.doltsopa,M.macclurei var.sublanea,M.platypetala and M.lacei,were reported for the first time.The results showed that the pollen shapes of the genus Michelia were symmetrical on both sides,hemimorphic with 1 aperture that was far-pole,single-channel,and almost as long as the pollen,elliptical in the polar view and cymbiform in the equatorial view with or without ridges on the surfaces.The densities of perforations on the tectum surfaces were 0.002 5-1.500 0 perforation(s)/μm².The longest axis were 30.69-58.02 μm long and their variation coefficients were 2.85％-8.20％.The shortest equatorial axis were 15.29-31.29 μm long and their variation coefficients were 4.29％-15.53％.The axial ratios were 1.43-2.69 and their variation coefficients were 2.53％-13.00％.It was discovered that the densities of perforations and 3 characters of the sizes were valuable in the classification of some species with the comparisons among sections and species and within species.