Erysiphe polygoni
DC.
KW [Darwin] 12308. Place of collection: Ukraine; Chernihiv Oblast; Bakhmach District; Baturyn settlement (N51°20' E32°52'). Date of collection: 4 September 1985. Associated organism: Rumex acetosella (leaf, petiole). Collector: Heluta, V.P.. Identifier: Heluta, V.P..