Abundant on the bark of living Acer saccharinum.
Asci 8-spored, croziers(+), IKI-.
Ascospores with many septa, long cylindrical, measured
*(87.7) 87.72 - 97 × 3.4 - 3.6 µm
Q = (24.1) 24.11 - 28 ; N = 3
Me = 92.1 × 3.5 µm ; Qe = 26.4
Paraphyses filiform, forked in the middle.