Mycosphaerella punctiformis
(Desm.) J. Schröt.
KW [Darwin] 26416. Place of collection: Russia; Leningradskaya oblast; Sankt Peterburg raion; Petrodvorets (N59°53' E29°54'). Date of collection: 2 June 1923. Associated organism: Acer platanoides (leaf). Collector: Anon. [phytopathologist].