bonezthecroc's Favorites

On the last year oak -Quercus rubra leaves, small, about 1mm, black, split like cup fungi. Fruitbodies are all within a pale area of the leaf.
Together with Incrucipulum ciliare (tiny white dots) on same leaves.

Looks like Lophodermium species with split like apothecia.

Asci IKI-, 8-spored.
Ascospores fusiform, multiguttulate., aseptate, measured
*(20.5) 20.55 - 27 (28.8) × 2.8 - 3.4 (3.7) µm
Q = (5.6) 6.4 - 8.8 (9.4) ; N = 20
Me = 24.3 × 3.2 µm ; Qe = 7.8
Paraphyses filiform, some have enlarge apex.
Not uncommon in the area.