Taphrina carveri

Taphrina dearnessii

Taphrina carveri n. sp. 

On Acer saccharinum causing "leaf blister of silver maple."

Discolored areas on leaves sometimes somewhat wrinkled, scattered or occasionally confined to one part of the blade, consisting of circular, elliptical or irregular spots up to 25 or more on a single leaf and up to 3 by 1 cm in diameter, or of more elongated areas situated between the main veins and reaching the leaf margins, on dry herbarium specimens "sepia" above, "isabella color" and "light brownish olive" below, to "blackish brown" on both surfaces, sometimes upper surface covered with delicate bloom; asci amphigenous [on both upper and lower surface], more commonly hypophyllous.

Range: Ontario, AL, MI

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

New species of Taphrina on red maple and on silver maple