Leucostoma massarianum
(De Not.) Höhn.
KW [Darwin] 8325. Place of collection: Russia; Leningrad Oblast; Sankt Peterburg Raion; Pushkin (N59°43' E30°25'). Date of collection: 18 July 1928. Associated organism: Sorbus aucuparia (twig). Collector: Gutner, L.S.. Identifier: Minter, D.W..