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Stigmidium lichenum (Arnold) Triebel & P. Scholz

Data Set Maintenance: Data set compiled. Data set author(s): Cáceres M. (03-04-23). Data set not revised; not to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Stigmidium. Genus incertae sedis: Stigmidium; of unknown placement (incertae sedis).

Taxonomic Literature: Triebel D. & Scholz P., Sendtnera 7: 211-231 (2001).

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

Ecology: Biotroph; lichenicolous, endosubstratic.

Lichen Photobionts: Primary photobiont absent.

Thallus: Indistinct.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Perithecioid, globose, forming inside the thallus or mycelium of the host, not emerging, becoming adnate, with a black or brown surface. Wall: Not carbonized. Margin: Brown; external filaments absent. Exciple: Brown. Hymenium: Gelatinized. Interascal Hyphae: Present.

Asci: Broadly clavate, not stipitate or distinctly stipitate, 33-42 µm long, 12-14 µm wide; dehiscence bitunicate.

Ascospores: Not uniseriate, c. 8 per ascus, spores 8 per ascus, globose or broadly ellipsoid, 12-15 µm long, 3.5-4 µm wide, obtuse; septa present, transversally septate, 1-transversally septate; lumina apically enlarged, constricted at the centre; wall thin, not constricted where the septum meets the spore wall, remaining hyaline, hyaline, not ornamented.

Conidiomata: Absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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