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Polycoccum superficiale D. Hawksw. & Miadlikowska

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (02-02-13). 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: Hawksworth D.L. & Miadlikowska J., Mycol. Res. 101:1127-1134 (1997).

Biogeography: Continent: Europe. Country or state(s): Germany (not confirmed); Central Russia.

Ecology: Perhaps saprobic or biotroph; lichenicolous. Host or Phorophyte Taxonomy: Peltigera malacea.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, subglobose, forming inside the thallus or mycelium of the host, becoming adnate (superficial), 150-200 µm wide, with a black or dark brown surface. Margin: Black or dark brown, homogenously pigmented, 31-38 µm wide. Exciple: Paraplectenchymatous; hyphae 7.5-9 µm wide, 6-7.5 µm long; black. Periphyses: Present. Hymenium: Gelatinized, iodine reaction: Lugol’s positive, hemiamyloid. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 1-2.5-(3) µm wide. Hypothecium: Black or dark brown.

Asci: 45-58 µm long, 13.5-16 µm wide; dehiscence bitunicate; ascoplasm not dextrinoid.

Ascospores: Not uniseriate, c. 8 per ascus, spores 8 per ascus, 15.5-19 µm long, 13.5-16 µm wide, aciculate; septa present; transversally septate, 1-transversally septate; lumina of equal size; wall thin, laterally constricted where the septum meets the spore wall, becoming pigmented, middle brown, not ornamented.

Conidiomata: Present.

Conidia: Ellipsoid (ellipsoid to oblong); 4.5-7.5 µm long, 2.5-4 µm wide.

(report generated 04.Okt.2007)

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