中文摘要：

报道了采自吉林省的4个中国东北地区白粉菌新记录种：合叶子迴白粉菌（Erysiphe ulmariae）、博落白粉菌（E.macleayae）、华阴白粉菌（E.huayinensis）和绣线菊叉丝单囊壳（Podosphaera spiraeae）,根据标本对其进行了形态描述和分析讨论,为中国东北地区白粉菌的物种多样性增补了新资料。

英文摘要：

In this paper,four new records of Erysiphales for northeastern China,Erysiphe ulmariae,E.macleayae,E.huayinensis and Podosphaera spiraeae,were reported.According to specimens collected and studied,they were described morphologically and discussed.The results supplemented new data to diversity of Erysiphales in Northeastern China.