Erysiphe polygoni
DC.
KW [Darwin] 12291. Place of collection: Ukraine; Kherson Oblast; Hola Prystan’ District; Black Sea reserve; Īvanovo-Ribal’chans’ka plot (N46°2x' E32°0x'). Date of collection: 22 August 1986. Associated organism: Rumex acetosa (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..