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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1. Metamelanea. Lichinaceae Nyl. (1854); Lichinales.

Taxonomic Literature: Henssen A., Lichenologist 21: 101-118 (1989); Henssen A. & Jørgensen P.M., Lichenologist 22: 137-147 (1990).

Biogeography: Checklist records: Germany, Sonoran Desert, Sweden and Norway, and United States and Canada (continental).

Lichen Photobionts: Primary photobiont present; cyanobacterial. Secondary photobiont absent.

Thallus: Crustose, rimose or areolate (primarily areolate). Upper Surface: Black or olive; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, not emerging, becoming adnate. Margin: Indistinct to prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Epithecium: Apical cells black or brown. Interascal Hyphae: Present, distinctly branched, distinctly anastomosed. Hypothecium: Brown.

Ascospores: c. 8 per ascus, ellipsoid, 9.5-13.5 µm long, 6-9.5 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed all accross the thallus surface.

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