Taphrina dearnessii n. sp.

On Acer rubrum causing "leaf blister of red maple"

Spots located anywhere on the leaf, although often marginal or scattered along the main veins and more or less delimited by them, sometimes causing a wrinkling of young leaves, more or less circular or angular, of various sizes, deciduous, discolorations sometimes covering entire area between main veins or involving practically entire leaf, on dry specimens often "bister" [sic] to "blackish brown"; at center sometimes "cinnamon" and somewhat translucent; affected samarae discolored entirely or in part; asci numerous, covering discolored areas on samarae or hypophyllous, rarely epiphyllous.

Range: AL, MI, NY, NC, PA, Ontario