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Lecanora intumescens (Rebent.) Rabenh.

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: Lumbsch, H.T., Plümper, M., Guderley, R. & Feige, G.B., Symb. Bot. Upsal. 32: 131-162 [151-152] (1997); Imshaug, H. & Brodo, I.M., Nova Hedwigia 12: 1-59 [46] (1966).

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

Ecology: Lignicolous or corticolous.

Thallus: Not subdivided parts, rimose; separate thallus parts thin or thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Pale grey or grey, matt, smooth; epruinose; not sorediate.

Ascocarps: Soon sessile. Margin: Lecanorine, smooth, not flexuose or slightly flexuose, persistent, prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brownish red or pink (rosé), pruina abundant. Parathecium (proper excipulum): White, not inspersed with crystals. Amphithecium (thalline excipulum): Present; 85-130-180 µm wide; crystals small, abundant, dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Absent, indistinct, pseudocortical, (30)-35-60-90 µm wide, not basally widened, (30)-35-60-90 µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells 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, (10)-10.5-13-15 µm long, 5-7.5-9 µm wide; wall thin, not ornamented.

Secondary Metabolites: Atranorin and psoromic acid, of the following substance class(es): orcinol depsides and orcinol depsidones.

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

(report generated 04.Okt.2007)


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