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Polycoccum jamesii D. Hawksw.

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (01-09-04). 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., Lichenologist 17: 298 [299-300] (1985); Hawksworth

D. L. & Diederich P., Trans. Brit. Mycol. Soc. 90: 293-312

Biogeography: Continent: Australasia. Region(s): Australia. Country or state(s): Tasmania.

Ecology: Biotroph; lichenicolous. Host or Phorophyte Taxonomy: Psoromidium versicolor.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, forming inside the thallus or mycelium of the host (arising in convex galls), not emerging, becoming adnate, 75-150 µm wide, with a black surface. Margin: 10-15 µm wide. Exciple: Dark brownish red. Periphyses: Absent. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed; cells 2-3 µm wide.

Asci: Clavate (elongate), 45-55 µm long, 15-20 µm wide; dehiscence bitunicate.

Ascospores: Not uniseriate (distichously arranged), c. 8 per ascus, spores 8 per ascus, ellipsoid, 10-12-(13) µm long, 6.5-7.5-(8.5) µm wide, obtuse (broadly rounded); septa present; transversally septate, 1-transversally septate; lumina more or less of equal size; wall thin, becoming pigmented, middle brown (olivaceous), not ornamented.

(report generated 04.Okt.2007)

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