Podosphaera clandestina
(Wallr.) Lév.
KW [Darwin] 11789. Place of collection: Russia; Astrakhan Oblast; Astrakhan’ district; Bashmakovka village (N46°15' E47°58'). Date of collection: 19 September 1915. Associated organism: Cydonia oblonga (leaf). Collector: Shembel, S.. Identifier: Heluta, V.P..