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Lecanora miculata Ach.


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 [146-147] (1984).

Biogeography: Continent: Northern America.

Ecology: Corticolous.

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

Upper Cortex: Gelatinized.

Ascocarps: Soon sessile. Margin: Lecanorine, verrucose or verruculose, smooth, not flexuose, persistent, indistinct or prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brownish yellow or pink (rosé), pruina abundant. Parathecium (proper excipulum): White, dissolving in 10% KOH. Amphithecium (thalline excipulum): Present; crystals small, not dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, indistinct, eucortical, 15-23-30 µm wide, not basally widened or basally widened, 15-25-35 µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells slightly swollen, hyaline or brownish red, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid or broadly ellipsoid, 10-11.7-13.5-(14) µm long, (5)-5.5-6.3-8 µm wide; wall thin, not ornamented.

Secondary Metabolites: Atranorin, lichexanthone, hopane-6a,22-diol, and norstictic acid, of the following substance class(es): orcinol depsides, xanthones, and (tri-)terpenoids.

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)
