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Lecanora perplexa Brodo
Family: Lecanoraceae
Lecanora perplexa image
Stephen Sharnoff  
Ecology: Corticolous; substrate non-calciferous. Thallus: Areolate (primarily areolate) or granular; separate thallus parts thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Verrucose, lemon (citrine) or pale brown, matt, smooth or rough; epruinose; not sorediate. Ascocarps: Soon sessile, not constricted at the base. Margin: Lecanorine, verrucose or verruculose, smooth, not flexuose or slightly flexuose, persistent, prominent or distinct, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brownish red, epruinose. Parathecium (proper excipulum): White, not inspersed with crystals. Amphithecium (thalline excipulum): Present; crystals small, not dissolving in 10% KOH; photobiont abundant. Amphithecial Cortex: Present, indistinct, eucortical, 10-15-20 µm wide, not basally widened, 10-15-20 µm wide at the base. Episamma: Without episamma. Epithecium: Apical cells slightly swollen, hyaline or brownish red, insoluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers. Ascospores: c. 8 per ascus, ellipsoid or broadly ellipsoid, (10)-10.5-13-16 µm long, (6)-6.5-8-9.5-(10) µm wide; wall thin, not ornamented. Secondary Metabolites: Atranorin and hopane-6a,22-diol, of the following substance class(es): orcinol depsides and (tri-)terpenoids. Spot Tests: Upper surface: C –, PD –.