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Lecanora meridionalis H. Magn.

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: Brodo, I.M., Beih. Nova Hedwigia 79: 63-169 [144-146] (1984).

Biogeography: Continent: Africa, Asia-Temperate, Europe, and Northern America.

Ecology: Lignicolous or corticolous.

Thallus: Not subdivided parts, areolate (primarily areolate); separate thallus parts thin. Thallus Outline: Indistinct; soon disappearing; black. Upper Surface: Verruculose, lemon (citrine), orange, or pale grey, matt, smooth or rough; epruinose; not sorediate.

Upper Cortex: Gelatinized.

Ascocarps: Soon sessile, not constricted at the base. Margin: Lecanorine, verrucose or verruculose, smooth, not flexuose, persistent, indistinct to prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brown or dark brown, epruinose. Parathecium (proper excipulum): White, not inspersed with crystals. Amphithecium (thalline excipulum): Present; crystals small, not dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, distinctly developed, eucortical, 15-20-25 µm wide, basally widened, 25-40-65 µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells not swollen or slightly swollen, hyaline or dark brown, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid or broadly ellipsoid, (9)-9.5-11-14 µm long, (6)-6.5-7.3-8 µm wide; wall thin, not ornamented.

Secondary Metabolites: Atranorin, roccellic acid, and gangaleoidin, of the following substance class(es): orcinol depsides, (higher) aliphatic acids, and orcinol depsidones.

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)


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