大波斯菊於臺北市發現白粉病爲害。其病原真菌經鑑定爲Sphaerotheca fuliginea (Schlecht.) Pollaci。本病爲臺灣之新紀錄。
A powdery mildew of Cosmos bipinnatus Cav. was found in December, 1987 at Jung Hsiag Garden of Taipei. The causal fungus is identified as Sphaerotheca fuliginea (Schlecht.) Pollaci. This disease is a new record in Taiwan.