Taphrina polyspora (Sorokīn) Johanson, 1886
on Acer
asci (from Mix, 1949a)
gall
leaves with yellowish to reddish brown spots, up to cm wide, sometimes somewhat swollen. At the upper side a grey layer of asci forms. The infested leaf parts finally turn black and die off.
host plants
Sapindaceae, narrowly monophagous
Acer sempervirens, tataricum.
references
Bataille (1936a), Buhr (1964b), Klenke & Scholler (2015a), Mix (1949a), Roskam (2019a).