Hi again

This is a small ascomycete of 3-4 mm, on beech (Fagus sylvatica) that was inside a stream. Biseriate with croziers asci, and the following reactions:
* IKI: dark red
* KOH + IKI: dark blue
* Melzer: very weak dirty red
* KOH + Melzer: dark blue

Large 3-septate spores, sometimes with 2, slightly strangled in the septa:
(19.5) 20.4 - 25 (28.6) x (4.4) 4.7 - 5.8 (7.3) µm
Q = (3) 3.7 - 5 (5.6) ; N = 55
Me = 22.8 x 5.2 µm ; Qe = 4.4

Paraphyses thickened and pigmented at the apex.

With the keys I arrive to Niptera, Phaeohelotium, Bisporella or Cudoniella, but no more.

Thank you again,

Miguel Ángel