Hello, 
this Hyalorbilia is from the Czech Republic, collected on a wet decaying twig of Tilis (ca 8 cm thick), in a castle park, 400 m a.s.l.

Asci 18 - 25 × 3.2 - 4.1 µm, 8-spored, base unstalked, unbranched.
Pars sporifera 8.3-10.6 µm.
Ascospores (4.2) 4.9 - 5.7 (5.8) × (0.7) 0.8 - 1 (1.1) µm, straight, with 1 SB near each pole.
Q = 4.4-7.6, Me = 5.2 × 0.9 µm; Qe = 6
Conidia 22 - 27 × 4.9-5.1 µm, unbranched, septate.

Using the key to Hyalorbilia in the monograph, I am coming somewhere around H. japonica (distribution not fitting), H. oreadum and H. herbicola (substrate not fitting + a bit deviating width of spores). So, could this be H. oreadum?
Thanks, Zuzana