Ascospores - distinctly deformed due to freezing temperatures which overhelming the last days, when apotheciums were founded. Asci - IKI - (without any reaction in Lugol reagement), 91 - 138 x 9,6 - 15,6 µm; Paraphyses - cylindrical, on the apexal parts are sometimes slightly inflated (up to 4,3 µm).
deciduous forest (Quercus sp., Carpinus betulus, Malus sp., ...) on the wood of Quercus sp.