Dear forum
On the west coast in Flanders (B) we found a very small peziza-like fungus on bark of Acer, perhaps on algae, but not on lichen.
Fungus peziza-like very small (1 to 2 mm) with fan-shaped rim. Substipitate, somewhat triangular in side view.
Possibly curved hairs on the edge of the excipulum (see photo). Texture angular.
Occurs on bark (Acer), possibly on algae, but clearly not on the lichen nearby (Lecidella elaeochroma).
Spores 6.8 x 2.7 mu, hyaline, ellipsoid with two drops.
Ascen 8-spored, 40-45 x 4-6 mu
No reaction with lugol.
Can someone help me further?
Thanks
Carl