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Lecidella placodina (Nyl.) Hertel

Data Set Maintenance: Data set compiled. Data set author(s): Kainz C. (01-09-05). Data set to be published after submission.

Nomenclature: Taxonomic rank: species. Lecidella. Lecanoraceae Körb. (1855); Lecanorales.

Taxonomic Literature: Hertel H., Herzogia 2: 479-515 (1973).

Biogeography: Continent: Africa.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, areolate (primarily areolate); separate thallus parts thin (up to 0.5 mm). Upper Surface: Grey-yellow (pale beige).

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, .25-1 mm in diam.. Margin: Lecideine/biatorine, excluded, indistinct. Disk: Strongly convex (mostly), black. Exciple: Not carbonized; aeruginose. Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells slightly swollen, turquoise. Hymenium: 70 µm high; white. Interascal Hyphae: Scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, 8.5-10 µm long, 7-8.5 µm wide; wall thick, distinctly differentiated into primary and secondary wall, not ornamented.

Conidiomata: Present.

Conidia: Filiform; 12-20 µm long, .8 µm wide.

Spot Tests: Cortex: KC – medulla: K –, C –.

(report generated 04.Okt.2007)

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