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Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (01-09-05). 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: Arnold F., Flora 57: 137-144 (1874); Hawksworth D.L. & Diederich P., Trans. Brit. Mycol. Soc. 90: 293-312 [303] (1988); Renobales G., Guineana 2: 1-310 [151-152] (1996).

Biogeography: Northern hemispheric. Continent: Europe. Region(s): Northern Europe and South-western Europe. Country or state(s): Sweden and Spain (incl. Andorra & Monaco).

Ecology: Biotroph; lichenicolous. Host or Phorophyte Taxonomy: Polyblastia intercedens; Lecidea plana.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, globose or subglobose, forming inside the thallus or mycelium of the host, becoming adnate, 100-150 µm wide, with a black surface. Exciple: Hyphae intricately interwoven, with no predominant orientation (paraplectenchymatic). Hymenium: Gelatinized, iodine reaction: Lugol’s positive, hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 3 µm wide.

Asci: Broadly clavate, 75-100 µm long, 25-35 µm wide; dehiscence bitunicate; exoascus not amyloid.

Ascospores: c. 8 per ascus, spores 8 per ascus, ellipsoid, 25-28 µm long, 10-14 µm wide, obtuse; septa present; transversally septate, 1-transversally septate; lumina apically enlarged, constricted at the centre; wall becoming pigmented, dark brown, ornamented, distinctly halonate, i.e., with a thick mucilaginous sheath.

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