Hello.
An ascomycete photographed on April 20, sprouting on the surface of a decaying trunk lying on the ground, most likely an oak tree.
Whitish apothecia, turning ochre with maturation or dehydration, with a diameter of 0.2 to 0.4 mm, sprouting scattered but abundantly on the trunk surface.
The apothecia react with KOH to an intense reddish yellow.
Hyphae of the exciple are roughly rectangular, suggesting a parallel arrangement.
Osctosporic asci, apparently with hooks at their bases and amyloid reaction of their tiny apical apparatus with Melzer's reagent, measuring 42.9–51.2 × 5–6.5 µm.
Paraphyses with contents inside, this content most visible in water.
Ascospores are cylindrical to fusiform, with a slightly granular interior. Free spore measurements in water are:
(4.6) 6 - 8.2 (8.9) × (2) 2.3 - 3.2 (3.7) µm
Q = (2) 2.3 - 3 (3.1) ; N = 30
Me = 7.2 × 2.8 µm ; Qe = 2.6

Thank you very much in advance for your opinion.
Best regards.