The relativity of the microsporogenesis and the corresponding exterior morphological development of floral organ were studied, meanwhile the scanned morphological structure of pollen grain from different clones was observed by scanning electron microscope. The results show that the microsporogenesis of Comus wilsoniana was normal dicotyledon microsporogenesis, there were four development periods： microsporocyte, tetrad, monocyte period and binucleate cells period; the microsporogenesis development period was related to the changes of floral or...
