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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: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 14. Rimularia. Rimulariaceae Hafellner (1984); Cladoniineae; Lecanorales.

Taxonomic Literature: David J.C. in: Purvis O.W., Coppins B.J., Hawksworth D.L., James P.W. & Moore D.M. (eds), The lichen flora of Great Britain and Ireland: 1-710 [542-543] (1992); Hertel H. & Rambold G., Biblioth. Lichenol. 38: 145-189 (1990); Poelt J. & Vezda A., Biblioth. Lichenol. 9: 1-258 [167] (1977) - sub Mosigia; Rambold G., Biblioth. Lichenol. 34: 1-346 (1989); Rambold G. & Triebel D., Biblioth. Lichenol. 48: 1-201 [124-125] (1992); Aptroot A. & Sipman H.J.M., Willdenowia 20: 221-256 (1991).

Biogeography: Checklist records: Austria, Germany, Great Britain, Sonoran Desert, Italy, Sweden and Norway, New Zealand, and United States and Canada (continental).

Ecology: Biotroph; lichenized or lichenicolous; terricolous, bryophytic, lignicolous, or corticolous; substrate non-calciferous.

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

Thallus: Crustose, granular, rimose, or areolate (primarily areolate). Thallus Outline: Soon disappearing or persistent. Upper Surface: Brown, grey, brownish yellow, olive, or white; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate or isidiate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by the whole lower surface; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Medulla: Iodine reaction in Lugol's solution positive or in Lugol's solution negative.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular or irregular, forming all across the thallus surface, becoming adnate to soon sessile. Margin: Prominent; external filaments absent. Exciple: Black, brown, or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brown or olive. Interascal Hyphae: Present, scarcely branched, distinctly anastomosed. Hypothecium: Black, brown, or brownish yellow.

Asci: Tholus thickened, amyloid, with amyloid cap or tube and flanks; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, broadly ellipsoid, or globose, 6-30 µm long, 4.5-19 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, pale brown, or dark brown, in Lugol's Solution negative, wall not ornamented.

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

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides, ß-orcinol depsides, and ß-orcinol depsidones.

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