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Lecidella violaceofuliginea (Vain.) Kalb

Data Set Maintenance: Data set authentic and standard item; not revised; to be published after submission.

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

Biogeography: Continent: Australasia, Europe, and Northern America.

Ecology: Biotroph; lichenized; lignicolous or corticolous; episubstratic; growing sun-exposed (and in shade).

Thallus: Crustose (rather smooth, even), not subdivided parts, granular (-verrucose). Thallus Outline: Persistent; black (or bluish black). Upper Surface: Grey-yellow or lime green (becoming grey-green in shade).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular or irregular, soon sessile, not constricted at the base, up to 1 mm in diam.. Margin: Lecideine/biatorine, strongly flexuose, more or less excluded (finally), distinct. Disk: Plane or weakly convex (later often), black (in exposed, well-lit situations, pale blue-black, brownish red or +/- piebald with a darker true exciple in shade). Exciple: Not carbonized; aeruginose (to dull grey-blue). Episamma: With episamma; soluble in KOH. Epithecium: Apical cells turquoise (to dull grey-blue), soluble in 10% KOH. Hymenium: 40-70 µm high. Hypothecium: Rarely white or brownish yellow ('more or less brownish orange', K+/- bright red-brown).

Ascospores: 10-17 µm long, 6-9 µm wide.

Secondary Metabolites: Present, arthothelin (2,4,5-trichloronorlichexanthone) (and granulosin, +/- 4,5-dichloro-norlichexanthone), atranorin, or thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone).

Spot Tests: Upper surface: K + deep yellow (KC+ yellow), C + orange ('orange', reactions often faint).

(report generated 04.Okt.2007)

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