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Lecanora caesiorugosa de Lesd.

Data Set Maintenance: Data set standard item. Data set author(s): Lumbsch H. T. & Guderley R. (98-09-01). Data set to be published after submission; 98-09-01.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecanora. Lecanoraceae Körb. (1855).

Taxonomic Literature: Elix, J.A. & Lumbsch, H.T., Mycotaxon 59: 309-317 [311] (1996).

Biogeography: Continent: Northern America.

Ecology: Corticolous.

Thallus: Areolate (primarily areolate); separate thallus parts thin or thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Verrucose or verruculose, brownish yellow, matt, rough; epruinose; not sorediate.

Ascocarps: Soon sessile, strongly constricted at the base. Margin: Lecanorine, verruculose or crenulate, rough, not flexuose or slightly flexuose, persistent, prominent, brighter than the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane or excavate, brownish red or brown, pruina scarce or abundant. Parathecium (proper excipulum): White, not inspersed with crystals. Amphithecium (thalline excipulum): Present; crystals small, not dissolving in 10% KOH or dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, distinctly developed, eucortical, 10-20-20-(30) µm wide, not basally widened, 10-20-20-(35) µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells not swollen or slightly swollen, brownish red, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid, (12.5)-13-15.5-17-(17.5) µm long, 5-6-8-(8.5) µm wide; wall thin, not ornamented.

Conidiomata: Adnate.

Pycnidia: Ovoid. Conidiophores: Vobis-type III. Conidia: Filiform.

Secondary Metabolites: Atranorin and hopane-6a,22-diol, of the following substance class(es): orcinol depsides and (tri-)terpenoids.

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)


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