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Miriquidica atrofulva (Sommerf.) A. J. Schwab & Rambold

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. (96-02-07). Data set reviewer(s): Kainz C. (00-11-16); to be published after submission; 96-02-07.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Miriquidica. Lecanoraceae Körb. (1855).

Taxonomic Literature: Rambold G. & Schwab A.J. 1989. Rusty coloured species of the lichen genus Miriquidica (Lecanoraceae). Nord. J. Bot. 10: 117-121Coppins B.J. & Purvis O.W. in: Purvis O.W., Coppins B.J., Hawksworth D.L., James P.W. & Moore D.M. (eds) 1992. The lichen flora of Great Britain and Ireland: 1-710 [385-387].

Biogeography: Continent: Europe and Northern America.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, areolate (primarily areolate); separate thallus parts thin (0.1-0.5 mm). Thallus Outline: Simple or lobed; persistent; black. Upper Surface: Brown, red, brownish yellow, or orange, smooth or rough; sorediate; soralia black, isolated, not confluent with other soralia. Lower Surface: Not rhizinate.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Soon sessile, slightly constricted at the base, .3-.5 mm in diam.. Margin: Indistinct to distinct. Disk: Plane to weakly convex, black, epruinose. Exciple: Grey or white. Parathecium (proper excipulum): White, inspersed with crystals. Amphithecium (thalline excipulum): Present. Epithecium: Apical cells distinctly swollen, pale brown or brownish yellow. Hymenium: White. Hypothecium: White.

Ascospores: 7.5-9 µm long, 6-6.5 µm wide.

Conidiomata: Immersed.

Conidia: Curved; 18-22 µm long.

Secondary Metabolites: Stictic acid.

Spot Tests: Upper surface: C –, PD + orange.

(report generated 04.Okt.2007)

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