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Lecanora floridula Lumbsch

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., Feige, G.B. & Elix, J.A., Bryologist 98: 561-577 [569] (1995).

Biogeography: Continent: Northern America.

Ecology: Corticolous.

Thallus: Not subdivided parts, areolate (primarily areolate); separate thallus parts thin. Thallus Outline: Indistinct; black. Upper Surface: Verrucose or verruculose, lemon (citrine) or lime green, matt, smooth; epruinose; sorediate; soralia.3-.8-1.4-(1.5) mm in diam., yellow or lime green, confluent, but not fusing or spreading, soredia coarse, 25-25-25 µm in diam..

Ascocarps: Soon sessile. Margin: Lecanorine, verrucose or verruculose, smooth, not flexuose, persistent, indistinct to prominent, concolourous with the surrounding thallus; without a thin rim between disk and thalline margin; sorediate. Disk: Plane, brownish yellow, epruinose, pruina scarce. 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, (5)-10-15-20 µm wide, not basally widened, (5)-10-15-20 µm wide at the base; inspersed with oil droplets. Episamma: Soluble in KOH. Epithecium: Apical cells slightly swollen or distinctly swollen, hyaline or brownish red, soluble in 10% KOH. Hymenium: Not inspers. Hypothecium: White; not inspers.

Ascospores: c. 8 per ascus, ellipsoid, (11)-11.5-12.5-14.5-(15) µm long, (5)-5.5-6.5-7.5-(8) µm wide; wall thin, not ornamented.

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

Spot Tests: Upper surface: C –, PD –.

(report generated 04.Okt.2007)


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