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Lecanora virentiflavida Müll. Arg.

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).

Biogeography: Continent: Southern America.

Ecology: Corticolous.

Thallus: Areolate (primarily areolate); separate thallus parts thin or thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Verruculose, lemon (citrine), matt, smooth; epruinose; not sorediate.

Upper Cortex: Gelatinized.

Ascocarps: Soon sessile, not constricted at the base. Margin: Lecanorine, crenulate, 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 brown, epruinose. Parathecium (proper excipulum): Lemon (citrine), dissolving in 10% KOH. Amphithecium (thalline excipulum): Present; crystals small, not dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, distinctly developed, eucortical, 15-20-25-(30) µm wide, not basally widened, 15-20-25-(35) µm wide at the base. Episamma: Soluble in KOH. Epithecium: Apical cells not swollen or slightly swollen, brownish red, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid, (15.5)-16-18.5-21-(22) µm long, (7.5)-8-9.5-11 µm wide; wall thin, not ornamented.

Secondary Metabolites: Atranorin and usnic acid, of the following substance class(es): orcinol depsides and dibenzofurans [and usnic acids].

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)


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