Observation on the conidia of 6 isolates belonging to four genera by sem indicated that there were remarkable difference between the genera . it was confirmed that the numbers of appendages and cells of conidia were steady characters for identification in the genera and species level . and the appendage knobbed on the top was also a very important character for the species identification 对以上四属11个种单孢分离菌株在pda培养基上培养性状的观察表明，菌落形态和颜色、菌落背面颜色和轮纹、产孢时间和产孢类型在属间具有重要的鉴别意义，在种内虽然不稳定，但不同种间确实存在差异，可以作为种间划分的参考依据。
