Melampsora populina
(Jacq.) Lév.
KW [Darwin] 2101. Place of collection: Russia; Leningradskaya oblast; Sankt Peterburg raion; Pushkin (N59°43' E30°25'). Date of collection: May 1929. Associated organism: Populus tremula (leaf). Collector: Naumov, N.A.. Identifier: Naumov, N.A..