Now i've found most close to this species Hypoderma alpinum. But in the description Spooner (New records and species of British microfungi, 1981) reports asci with acute apices and spores some smaller than in this finding.

The host plant - Eriophorum vaginatum, at bog. The fungus was fruiting abundantly on several bushes growing nearby. 04.08.2012, N61,065408° E69,455652°.

Hysterothecia ellipsoid (expanding when overmature to circular), to 0,9 x 0,5 mm, first conave with longitudinal slit (rarely irregular bursting by 3-4 lobes), later expanding to short-cylindrical; outer surface black, with more or less pronounced yellow rim at the edge, hymenium grayish.

Ectalexcipulum of flanks from textura epidermoidea, inside lays hyaline textura globosa, which exceeding external brown layer at the edge (yellowish collar from cylindrical cells about 15-20 x 4 mk); base of receptacle lined with thin layer of labirinthuloid tissue; subhymenium from parralel hyphae 2,5 mk broad; asci clavate, with clamp, inamyloid, 76-109 x 11,4-13; paraphyses cylindrical (1 mk), circinate, branched in upper part, with broadened base (up to 5 mk) separated from upper part by septa; spores subfusoid, curved, some with gelatinose sheath, with two big guttules and plenty of small, 27,3 (24-33) x 3,9 (3,3-4,4) (Q=7,05; N=17).