Erysiphe polygoni
DC.
KW [Darwin] 11518. Place of collection: Ukraine; Kyiv Oblast; Irpin’ District; Bucha settlement (N50°33' E30°12'). Date of collection: 15 July 1977. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..