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Lecanora campestris (Schaer.) Hue

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. Taxonomic rank: species. Lecanora. Lecanoraceae Körb. (1855).

Taxonomic Literature: Brodo, I.M., Beih. Nova Hedwigia 79: 63-169 [109-110] (1984).

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

Ecology: Terricolous; substrate non-calciferous or calciferous.

Thallus: Not subdivided parts, areolate (primarily areolate); separate thallus parts thin or thick. Thallus Outline: Arachnoid; indistinct; soon disappearing; white. Upper Surface: Verrucose or verruculose, lemon (citrine) or pale grey, matt, smooth or rough; epruinose; not sorediate.

Upper Cortex: Gelatinized.

Ascocarps: Soon sessile. Margin: Lecanorine, smooth, not flexuose, persistent, indistinct to distinct, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brownish red, epruinose. Parathecium (proper excipulum): White, dissolving in 10% KOH. Amphithecium (thalline excipulum): Present; crystals small, abundant, dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, distinctly developed, eucortical, 15-20-25-(30) µm wide, basally widened, 25-45-55-(60) µm wide at the base; inspersed with oil droplets. Episamma: Without episamma. Epithecium: Apical cells not swollen or slightly swollen, hyaline or brownish red, insoluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid or broadly ellipsoid, 10.5-14.5-16.5-(17) µm long, (5)-5.5-7-8.5 µm wide; wall thin, not ornamented.

Secondary Metabolites: Atranorin, 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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