Godronia cassandrae probably, it was collected from Chamaedaphne calyculata twigs. I've read only the key in Nordic Macromycetes now.  Another two species on ericaceae: G. andromedae, G. callunigera. G. andromedae described with spores 5-septate (mine 7-), and on host Andromeda, so it was excluded.  G. cassandrae described there with spores some longer then mine, and it reported with stroma (absent in this specimen). There are also variations in this species, which i did not studied. G. callunigera fits well too. The difference between these two species (G. callunigera - G. cassandrae) not clear to me (reported spore size, and in my specimen it is just intermediate).

Apos deep-cupulate (with small pore when young), sessile or with short stipe, up to 0,7 mm in diam,  single, without stroma, bursting through the bark of twigs; outer surface coriaceous, dark brown, radially splitted when overmature, hymenium grayish.

Excipulum from textura prismatica, at the base amorphous, almost black, easily crashed when tapped, in mid-length from brown prismatic cells 10-15 x 7-9mk, in collar (part exceeding hymenium) from two layers: external layer from brown textura prismatica, internal layer from textura oblita-gelatinosa, inner hyphae covered by warts to 2 mk high; medulla from textura porrecta, hyphae parralel to flanks, not conspicuous; asci cylindrical, enlarged in mid-length, with short stalk and clamp, with amyloid pore (KOH, lugol), 80-107 x 8,3-12,2; paraphyses filiform (1 mk),not ecxeeding the asci, septate, rarely branched, upper part slightly enlarged (2 mk), with some gelatinose encrustation; spores needle-shaped, with obtuse and acute ends, up to 7-septate, often start to germinate from upper end, 56 (46-66) x 2,6 (2-3).