Botanische Staatssammlung München © 1995–2008
Data remain intellectual property of the data set authors.

Lecidella umbrosa (Bagl. ex A. Massal.) Hertel

Data Set Maintenance: Data set authentic and standard item. Data set author(s): Kainz C. (03-09-11). Data set revised; to be published after submission.

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

Biogeography: Continent: Europe.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, not subdivided parts, rimose or areolate (primarily areolate); separate thallus parts thin or thick (0.1 - (more than) 1.5 mm). Thallus Outline: Soon disappearing. Upper Surface: Lime green or lemon (citrine), matt or weakly glossy (shiny).

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, strongly constricted at the base, up to 1.5 mm in diam.. Margin: Lecideine/biatorine, excluded, distinct or indistinct (about 0.075 mm). Disk: Plane to rarely strongly convex to weakly convex, black, epruinose or rarely pruinose (pale greyish). Exciple: Not carbonized; white or dark green. Parathecium (proper excipulum): Brownish red, inspersed with crystals (often). Amphithecium (thalline excipulum): Present; photobiont absent. Epithecium: Apical cells distinctly swollen (sometimes), green or dark green. Hymenium: White or pale green (sometimes); inspersed with crystals (sometimes at lower parts). Hypothecium: Brownish yellow (rarely) or brownish red.

Ascospores: c. 8 per ascus, broadly ellipsoid, 9-15 µm long, 5.5-8.5 µm wide; septa absent; wall thick (not halonate), distinctly differentiated into primary and secondary wall (not halonate), not ornamented (not halonate).

Conidia: Filiform or curved; 20-25 µm long.

Secondary Metabolites: Arthothelin (2,4,5-trichloronorlichexanthone), atranorin, thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone), thiophaninic acid (= 2,4-Dichloro-6-O-methylnorlichexanthone), or thuringione (= 2,4,5-trichloro-3-O-methylnorlichexanthone), of the following substance class(es): xanthones.

Spot Tests: Upper surface: K – (negative) or + deep yellow (rarely), C + orange, PD – or + yellow (rarely).

(report generated 04.Okt.2007)

In case that additional characters and states are required to be included in this data set, consult the LIAS Instructions to Participants and follow the procedures described there.