These small, gregarious apothecia up to 0.5 mm in diameter grew on a branch of Fagus sylvatica fallen to the ground at 1300 m altitude. At the beginning they are whitish, but step by step they are invading of gray or amber gray color from the base.
The asci have croziers and the apical pore is IKI b . The margin is not overflowing and it is made by hyaline clavate cells with vacuolar bodys. The paraphyses contain vacuoles sometimes abundant, sometimes refractive, sometimes not, so the content is not clearly that of a Mollisia.
KOH negative or almost negative. I think it's a Mollisia, perhaps related to the amberina/ subamberina/sublivbidula group, but the asci IKI b seem to separate it from this complex.
What do you think?