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Lecanora melanommata C. Knight

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: Lumbsch, H.T., J. Hattori Bot. Lab. 77: 1-175 [115] (1994).

Biogeography: Continent: Australasia.

Ecology: Corticolous.

Thallus: Areolate (primarily areolate); separate thallus parts thick. Thallus Outline: Indistinct; soon disappearing. Upper Surface: Verrucose or verruculose, lemon (citrine) or pale grey, glossy (shiny), smooth; epruinose; not sorediate.

Ascocarps: Not emerging, becoming adnate to soon sessile. Margin: Lecanorine, verrucose or verruculose, smooth, not flexuose, persistent, distinct to prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin. Disk: Plane, brownish red, epruinose. 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, 15-20-25 µm wide, not basally widened, 15-20-25 µm wide at the base; inspersed with oil droplets. Episamma: Without episamma. Epithecium: Apical cells not swollen or slightly swollen, brownish red, insoluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Conidia: 14-15.5-17 µm long.

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 –.

(report generated 04.Okt.2007)


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