Oidium sp.

KW [Darwin] 50992. 采集地点: 乌克兰; Kyiv Oblast; Kiev city; Feofania suburb; experimental station of Kholodny Institute of Botany (N50°21' E30°29'). 采集日期: 1982年9月9日. 相关生物: Carpinus betulus (叶片). 采集者: Heluta, V.P.. 鉴定人: Minter, D.W..