Another Hystoranevia species has showed up at the same leaf of Eriophorum where H. diminuens was. There were only several inconspicuous apos, but i think this fits well with description of Hysteronaevia advena in Nannfeldt, 1984. It has very long, septate spores and it reported as restricted to Eriophorum in Subarctic and Arctic.

Apothecia about 200 mk length, ellipsoid, opening by ellipsoid slit (vital description and pictures are absent).

Excipulum textura angularis - prismatica, end cells clavate; asci clavate, with thickened wall, inamyloid, 75 x 16; paraphyses cylindrical, with some enlarged tips, with gelatinose sheath, hyaline or brownish, 1,9 broad at base, up to 4 mk at tip; spores long, fusoid to falcate, 1-3 septate, many-guttulate, 39 (32,5-44,4) x 3,6 (3,3-4,6) (Q=10,94; N=15).