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Lecanora cenisia Ach.

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 [110-112] (1984).

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

Ecology: Lignicolous; substrate non-calciferous.

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

Upper Cortex: Gelatinized.

Ascocarps: Soon sessile, not constricted or strongly constricted at the base. Margin: Lecanorine, verruculose or verrucose, smooth, not flexuose, persistent, distinct to prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, dark brown, grey-brown, brownish yellow, or brownish red, pruina scarce. 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, (10)-15-20-30 µm wide, basally widened, 25-45-60 µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells slightly swollen, hyaline, dark brown, or brownish red, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, broadly ellipsoid, 9.5-14.5-17.5 µm long, (6)-6.5-8-9 µm wide; wall thick, distinctly differentiated into primary and secondary wall, not ornamented.

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

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)


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