Abstract: The authors studied the ontogeny of Phialophora verrucose and Exophiala spinifera by using SEN and TEM. The results showed that the primary and secondary conidia from phialides are enteroblastic. The primary conidia from annellides of E. spinifera is holoblastic. But the secondary conidia from annelldes is enteroblastic. The annellide undergoes percurrent proliferation after maturation at its apex.

Key words: Phiaiophora, Microscopy, electon