Lecidella commutata Knoph & Leuckert

Data Set Maintenance: Data set compiled. Data set author(s): Kainz C. (01-09-05). Data set reviewer(s): Knoph J.-G.; revised @EXCL@ not revised (03-10-10); 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., Garnitz R. & Leuckert C., Mycotaxon 71: 163-168
(1999).

Biogeography: Continent: Australasia and Southern America.

Ecology: Biotroph; lichenized; lignicolous or corticolous.

Thallus: Crustose, not subdivided or subdivided into main parts, areolate (primarily areolate); separate thallus parts.05-.2 mm wide; thin (up to 0.5 mm). Thallus Size and Differentiation: Up to 1.5 cm long. Thallus Outline: Soon disappearing or persistent (rarely at the thallus margin or between the areoles); black. Upper Surface: White or lemon (citrine), rough.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, slightly constricted at the base, .2-.4 mm in diam.. Margin: Lecideine/biatorine, excluded (in the more convex apothecia), distinct (from the beginning). Disk: Plane to weakly convex (rarely), black, epruinose. Exciple: Carbonized; white or pale grey-green (yellowish olive-grey). Parathecium (proper excipulum): White. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells hyaline or pale grey-green (yellowish olive-grey). Hymenium: 50-95 µm high; white. Hypothecium: White.

Ascospores: Ellipsoid, 7.5-12.5 µm long, 4.5-7.5 µm wide.

Secondary Metabolites: 2,5,7-trichloro-3-O-methylnorlichexanthone (trace) or vicanicin (major compound; vicanicinmonomethylether trace).

(report generated 04.Okt.2007)