Miriquidica mexicana Rambold, Sipman & Hertel

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 or basionymous. Taxonomic rank: species. Miriquidica. Lecanoraceae Körb. (1855).

Taxonomic Literature: Rambold, G., Sipman, H. & Hertel, H. 1996. A new species of Miriquidica from the Coastal desert in Baja California. Mycotaxon 58: 319-324.

Biogeography: Continent: Northern America.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, areolate (primarily areolate) (regularly to dispersed); separate thallus parts thin (up to 0.4 mm). Thallus Outline: Simple or lobed; persistent. Upper Surface: Pale yellow, brown (when dry), or olive; not sorediate. Lower Surface: Not rhizinate.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Soon sessile, strongly constricted (usually) at the base, .4-.8 mm in diam.. Margin: Distinct, prominent, or indistinct (up to 0.07 mm). Disk: Plane (at first) or weakly convex, black (when dry), epruinose. Exciple: Grey, white, or brownish yellow. Parathecium (proper excipulum): White, inspersed with crystals. Amphithecium (thalline excipulum): Present; photobiont abundant. Epithecium: Apical cells distinctly swollen, green or olive. Hymenium: White. Hypothecium: White.

Ascospores: Ellipsoid, 6.5-7.8-10 µm long, 3.2-3.7-4.5 µm wide; septa absent.

Conidiomata: Immersed.

Pycnidia: Globular (more or less). Conidiophores: Vobis-type V. Conidia: Filiform; 20-27-42 µm long.

Secondary Metabolites: Lobaric acid (maybe) or miriquidic acid.

(report generated 04.Okt.2007)