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Lecanora cinereofusca 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 [114-116] (1984); Schauer, T. & Brodo, I.M., Nova Hedwigia 11: 527-533 (1966).

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

Ecology: Corticolous.

Thallus: Not subdivided parts, areolate (primarily areolate); separate thallus parts thin or thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Verruculose, lemon (citrine) or pale grey, matt, smooth or rough; epruinose; not sorediate or sorediate; soralia white, confluent, but not fusing, soredia farinose.

Upper Cortex: Gelatinized.

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

Ascospores: c. 8 per ascus, broadly ellipsoid, (7.5)-8-12.5-14.5-(15.5) µm long, (6)-6.5-7.5-9-(9.5) µm wide; wall thin or thick, distinctly differentiated into primary and secondary wall, not ornamented.

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

Spot Tests: Upper surface: C –, PD + orange.

(report generated 04.Okt.2007)


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