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Polycoccum epicrassum (H. Olivier) R. Sant.

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (01-08-27). 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. & Diederich P., Trans. Brit. Mycol. Soc. 90: 293-
312 [300] (1988); Santesson R., Svensk Bot. Tidskr. 54: 504 (1960).

Biogeography: Northern hemispheric. Continent: Europe. Region(s): Middle Europe, South-eastern Europe, and Northern Africa. Country or state(s): United Kingdom, Spain (incl. Andorra & Monaco), and Italy (incl. San Marino & The Vatican City, excl. Sicily, Sardinia); Morocco.

Ecology: Biotroph; lichenicolous. Host or Phorophyte Taxonomy: Squamarina cartilaginea.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, forming inside the thallus or mycelium of the host (arising on necrotic patches to 1,5 mm diam). Periphyses: Absent. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 2 µm wide.

Asci: Clavate (elongate) or sub cylindrical, 55-(80) µm long, 12-20 µm wide.

Ascospores: Not uniseriate (biseriate), c. 8 per ascus, spores 8 per ascus, ellipsoid or clavate, (15)-19-22-(26) µm long, (6)-7-9-(10) µm wide, obtuse; septa present; transversally septate, 1-transversally septate; lumina apically enlarged, constricted at the centre; wall becoming pigmented, dark brown (olivaceous brown), ornamented (verruculose).

Conidiomata: Absent resp. not observed.

(report generated 04.Okt.2007)

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