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Data Set Maintenance: Data set authentic. Data set author(s): Knoph, J.-G. (03-10-02). Data set reviewer(s): Knoph J.-G.; revised @EXCL@ not revised (03-10-22); to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecidella. Synonyms: Lecidea grassiana H. Magn., Lecidea pseudomelana Müll. Arg., Lecidea subaequata Müll. Arg., Lecidea subemersa Müll. Arg., Lecidea zahlbruckneri Fink (according to Knoph & Leuckert 1994); Lecanoraceae Körb. (1855); Lecanorales.

Type Information: Basionym: Lecidea latypiza Nyl., Bull. Soc. Linn. Normandie (Serie 2) 6: 310 (1872).

Taxonomic Literature: Choisy, M. (1950): Bull. Mens. Soc. Linn. Lyon 19: 18
Knoph, J.-G. & Leuckert, C. (1994): Chemotaxonomic studies in the saxicolous species of the lichen genus Lecidella (Lecanoraceae, Lecanorales) in America. - Nova Hedwigia 59: 455-508 [487-490].
Knoph, J.-G. & Mies, B. (1995): Beiträge zur Flechtenflora der Kapverdischen Inseln III. Die saxicolen Arten der Gattung Lecidella. In: Knoph, J.-G., Schrüfer, K. & Sipman, H.J.M. (eds.): Studies in lichenology with emphasis on chemotaxonomy, geography and phytochemistry - Festschrift Ch. Leuckert; Bibl. Lichenol. 57: 297-305 [299-300].
Knoph, J.-G. & Leuckert, C. (2000): Chemotaxonomische Studien in der Gattung Lecidella (Lecanorales, Lecanoraceae) III. Die gesteinsbewohnenden Arten mit farblosem Hypothecium unter besonderer Berücksichtigung von europäischem Material. - Herzogia 14: 1-26 [11-12].

Ecology: Biotroph; lichenized; lignicolous or corticolous; substrate non-calciferous.

Thallus: Crustose, not subdivided parts, rimose; separate thallus parts thin (up to 0.3 mm, max. 0.6 mm). Thallus Outline: Soon disappearing or persistent (rarely at the thallus margin, up to 0.1 mm thick); black. Upper Surface: Lemon (citrine), rough.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, becoming adnate to soon sessile, slightly constricted at the base, sparse or moderately abundant, .45-.8 mm in diam.. Margin: Lecideine/biatorine, distinct (from the beginning). Disk: Plane, black, epruinose. Exciple: Carbonized; dark blue or dark green. Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells not swollen or slightly swollen, green (pale to strong) or turquoise. Hymenium: 50-70-85 µm high; white; not inspers. Interascal Hyphae: Scarcely branched to distinctly branched (rarely), not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, ellipsoid or ovoid, (7.5)-10-(14) µm long, (4.5)-6-(10) µm wide.

Secondary Metabolites: 3-O-methylthiophanic acid (= 2,4,5,7-Tetrachloro-3-O-methylnorlichexanthone), arthothelin (2,4,5-trichloronorlichexanthone), atranorin, diploicin, and thuringione (= 2,4,5-trichloro-3-O-methylnorlichexanthone).

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