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The Camellia oleifera blight pathogen was identified as Pestalotiopsis microspora.In vitro culture showed that PDA medium was the best for the mycelial growth of pathogen.No conidium was produced when growing in crapeks medium.Conidia germinated best on OMA medium.Temperature ranged from 25 ~ 30℃ was optimum for its mycelia growth and spore germination.Spores could not germinate below 5℃ or over 35℃.pH ranged from 4 ~ 11 was optimum for its mycelia growth, while pH 7 was optimum for conidium germination.