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Polycoccum cladoniae Diederich & D. Hawksw.

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (01.08.17). 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. & Diederich P., Trans. Brit. Mycol. Soc. 90: 293-
312 [297-300] (1988).

Biogeography: Northern hemispheric. Continent: Europe. Region(s): Middle Europe. Country or state(s): Austria and Germany.

Ecology: Biotroph; lichenicolous. Host or Phorophyte Taxonomy: Cladonia digitata, Cladonia sp.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, subglobose, forming inside the thallus or mycelium of the host (on the squamules), not emerging (when young), soon sessile, sparse, 100-250 µm wide, with a black surface. Wall: Complete. Margin: Black; external filaments absent. Exciple: Paraplectenchymatous; hyphae 2-7 µm wide; brown. Hymenium: Iodine reaction: Lugol’s negative. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 1.5-2 µm wide. Hypothecium: Brown.

Asci: Clavate (elongate), not stipitate, 40-60-(80) µm long, 9-12-(14) µm wide; dehiscence bitunicate.

Ascospores: Not uniseriate (irregularly arranged), c. 8 per ascus, spores 8 per ascus, ovoid, 13.5-16.5 µm long, 6.5-8 µm wide, obtuse; septa present; transversally septate, 1-transversally septate; lumina more or less of equal size; wall laterally constricted where the septum meets the spore wall, becoming pigmented, middle brown, ornamented (verruculose).

Conidiomata: Absent resp. not observed.

(report generated 04.Okt.2007)

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