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Data Set Maintenance: Data set compiled. Data set author(s): Kainz C. (01-09-04). Data set to be published after submission.

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

Thallus: Indistinct, more or less not subdivided parts, areolate (primarily areolate); separate thallus parts thin. Upper Surface: Grey (sometimes with a brownish tinge), pulverulaceous (sometimes more or less leprose throughout); special structures present:; sorediate; soralia up to.2-(.6) mm in diam., more or less confluent, but not fusing (sometimes), soredia 20-30-(60) µm in diam..

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming independently from the host thallus or mycelium (in groups of 2-4 or, ocasionally, discrete), soon sessile, sparse (present in one specimen), up to.5 mm in diam.. Margin: Lecideine/biatorine, indistinct (0.04-0.08 mm wide). Disk: Plane, brown. Exciple: Not carbonized; more or less brown (with a faint green tinge in thin sections). Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present. Episamma: With episamma (in lateral part of exciple and hymenium); soluble in KOH. Epithecium: Apical cells distinctly swollen (surrounded by a brown, K+ intensifying pigment), brown. Hymenium: Brown, more or less white, pale green, or pale brown (vertikal streaks). Interascal Hyphae: Distinctly branched. Hypothecium: White (partly K/I+ blue or violet-blue).

Ascospores: c. 8 (often with fewer spores) per ascus, broadly ellipsoid, 15-21 µm long, 7.5-9 µm wide; septa absent.

Secondary Metabolites: Arthothelin (2,4,5-trichloronorlichexanthone), atranorin, or thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone), of the following substance class(es): (tri-)terpenoids.

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