Rhytisma acerinum
(Pers.) Fr.
IMI 23179. Place of collection: Canada; Ontario; London (N42°5x' W81°1x'). Date of collection: 24 May 1913. Associated organism: Acer saccharinum (leaf). Collector: Dearness, J.. Literature: page(s) Bartholemew, Fungi Columbiani 4171.