Lecidella aegaea Knoph & Sipman

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

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

Taxonomic Literature: Knoph J.-G. & Sipman H., Mycotaxon 72: 73-78 (1999).

Biogeography: Continent: Europe.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, rimose or areolate (primarily areolate); separate thallus parts thick (up to 1.2 mm). Thallus Outline: Soon disappearing or persistent (rarely between two adjacent thalli); black. Upper Surface: White or pale grey-yellow, more or less rough.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, forming independently from the host thallus or mycelium, becoming adnate or soon sessile, slightly constricted at the base, .65-1.6 mm in diam.. Margin: Lecideine/biatorine, persistent, distinct (from the beginning). Disk: Plane or weakly convex, black, epruinose. Exciple: Not carbonized; green. Parathecium (proper excipulum): Brown. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells distinctly swollen (up to c. 5 µm diam.), blue or dark green. Hymenium: White; not inspers, oil inspersed, or inspersed with crystals. Interascal Hyphae: Distinctly branched (rarely). Hypothecium: White (in upper part) or brownish yellow.

Ascospores: Ellipsoid, 12-15 µm long, 6.5-8 µm wide; septa absent; wall thin, not ornamented.

Conidiomata: Present; immersed.

Conidia: Filiform or curved; 18-32 µm long, 1 µm wide.

Secondary Metabolites: 2,5,7-trichloro-3-O-methylnorlichexanthone, isoarthothelin (= 2,5,7-trichloronorlichexanthone), or thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone), of the following substance class(es): xanthones.

(report generated 04.Okt.2007)