The in vitro conidial morphology of Mycosphaerella fijiensis was characterised using phase contrast microscopy and scanning electron microscopy. Conidial formation was described as blastic and hologenous, conidiophores as primarily local, and conidial formation as apical and/or subapical, successive and solitary. Although in vitro production of conidia has been commonly used for artificial inoculations, this is the first time that the in vitro conidial formation of M. fijiensis has been described.