Lecidella euphorea (Flörke) Hertel

Data Set Maintenance: Data set authentic. Data set author(s): Knoph, J.-G. (03-09-29). Data set reviewer(s): Knoph J.-G.; revised (03-10-22); to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecidella. Synonyms: Lecidea euphorea (Flörke) Nyl.; Lecanoraceae Körb. (1855); Lecanorales.

Type Information: Basionym: Lecidea sabuletorum var. euphorea Flörke, Berlin Mag. Gesell. Naturforsch. Freunde 2: 311 (1808).

Taxonomic Literature: Knoph, J.-G. & Leuckert, C. (1999): Proposal to conserve the name
Lecidea euphorea (lichenised Ascomycetes) with a conserved type . -
Taxon 48: 567-568.

Biogeography: Alpine. Continent: Asia-Temperate, Europe, and Northern America.

Ecology: Biotroph; lichenized; lignicolous or corticolous.

Thallus: Crustose, granular, rimose, or areolate (primarily areolate); separate thallus parts thin (0.3 - 0.5 mm) or thick (up to ca. 1.2 mm). Thallus Outline: Soon disappearing or persistent; black. Upper Surface: Grey-yellow, pale grey, or lemon (citrine), matt, smooth.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, becoming adnate to soon sessile, slightly constricted at the base, moderately abundant, .8-1.2 mm in diam.. Margin: Lecideine/biatorine, excluded, distinct (from the beginning) or indistinct (up to 0.1 mm). Disk: Plane to weakly convex to when old strongly convex, black, epruinose. Exciple: Carbonized; dark blue to dark green. Parathecium (proper excipulum): Rarely brownish yellow or brownish red. Amphithecium (thalline excipulum): Present. Episamma: Without episamma or with episamma. Epithecium: Apical cells not swollen or slightly swollen, hyaline (rarely, only when yellowish crystals are present), dark green, or turquoise. Hymenium: 55-75-100 µm high; white; not inspers. Hypothecium: Rarely brownish yellow or brownish red.

Ascospores: c. 8 per ascus, broadly ellipsoid, ellipsoid, or ovoid, (7)-16 µm long, (4.5)-10 µm wide; septa absent; wall thick (not halonate), distinctly differentiated into primary and secondary wall (not halonate), not ornamented (not halonate).

Secondary Metabolites: 2,5,7-trichloro-3-O-methylnorlichexanthone, 3-O-methylasemone (= 4,5,7-trichloro-3-O-methylnorlichexanthone), 3-O-methylthiophanic acid (= 2,4,5,7-Tetrachloro-3-O-methylnorlichexanthone), 5,7-dichloro-3-O-methylnorlichexanthone, atranorin, isoarthothelin (= 2,5,7-trichloronorlichexanthone), or thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone).

(report generated 04.Okt.2007)