Erysiphe polygoni
DC.
KW [Darwin] 12290. Place of collection: Ukraine; Odesa Oblast; Artsyz District; Artsyz town (N45°59' E29°26'). Date of collection: 16 August 1978. Associated organism: Rumex acetosa (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..