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Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (01-09-10). Data set reviewer(s): Triebel D.; revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Polycoccum. Dacampiaceae Körb. (1855); Dothideales.

Taxonomic Literature: Taxonomic notes: P. trypethelioides is the type species of Polycoccum. Santesson R., Svensk Bot. Tidskr. 54(4): 499-522 [505] (1960).

Biogeography: Northern hemispheric. Continent: Europe. Region(s): Northern Europe and Middle Europe. Country or state(s): Finland, United Kingdom, Sweden, and Germany; Greenland.

Ecology: Biotroph; lichenized or lichenicolous. Host or Phorophyte Taxonomy: Stereocaulon sp.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, forming inside the thallus or mycelium of the host (in massive subglobose galls), not emerging, 150-250 µm wide. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 1.5-2.5 µm wide.

Asci: Clavate (elongate), (74)-80-100 µm long, (14)-16-19 µm wide; dehiscence bitunicate.

Ascospores: Irregularly uniseriate, c. 8 per ascus, spores 8 per ascus, broadly ellipsoid, 14-22 µm long, 8-10 µm wide; septa present; transversally septate, 1-transversally septate; lumina apically enlarged, constricted at the centre; wall thin, dark brown or middle brown, not ornamented.

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