The total number of 4760 palynomorphs distributed in 6 families of pteridophytes, 3 families of gymnosperms and 29 families of angiosperms were observed and identified. About 34.2% or 13 families of these airborne palynomorphs belong to autopatricplants plants, 50% or 19 families to allopatric Plants, and 15.8% or 6 families to both autopatric and allopatric vegetation. Based on the data of seasonal variation of air borne grains the flowering periods: Betulaceae, Compositae, Magnoliaceae and Gramineae belong in the former group, and Pinaceae, Taxodiaceae, Cupressaceae, Chenopodiaceae, Euphorbiaceae, Fagaceae, Lauraceae, Moraceae, Myrtaceae, and Cyperaceae are found to be in the latter.