Rhytisma acerinum
(Pers.) Fr.
IMI 241703. Place of collection: USA; Michigan; Ottawa National Forest (N46°30' W89°00'). Date of collection: 5 October 1978. Associated organism: Acer rubrum (leaf). Collector: Stack, R.W.. Literature: page(s) M.A. Sherwood, Phacidiales Exsiccati 18.