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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Egea J.M. & Torrente P. (00-03-20), Scholz P. (06-06-12), and Triebel D. (00-5-07); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 30. Enterographa. Roccellaceae Chevall. (1826); Arthoniales.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - N.S. Numero Special 7: 1-893 [361-362] (1985); Ertz D., Christnach C., Wedin M. & Diederich P., Biblioth. Lichenol. 91: 1-155 [125-131] (2005); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [164-166], Wellington (1985); James P.W. & Dobson F.S. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992); Matzer M., Mycol. Pap. 171: 1-202 (1996); Poelt J. & Vezda A., Biblioth. Lichenol. 9: 1-258 [103-105] (1977); Santesson R., Symb. Bot. Upsal. 12: 1-590 [104-108] (1952); Thor G., Lücking R. & Matsumoto T., Acta Univ. Upsal. Symb. Bot. Upsal. 32(3): 1-72 [36-37] (2000); Torrente P. & Egea J.M., Biblioth. Lichenol. 32: 1-282 (1989).

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

Ecology: Biotroph; lichenized or lichenicolous; corticolous or epiphyllous; substrate non-calciferous.

Lichen Photobionts: Primary photobiont present; chlorococcal and trentepohlioid. Primary photobiont taxonomy: Trentepohlia (A. Beck 22-05-97); Trentepohliaceae; Trentepohliales. Secondary photobiont absent.

Thallus: Indistinct or crustose, not subdivided parts, granular or rimose. Thallus Outline: Soon disappearing or persistent. Upper Surface: White, grey, olive, or brown; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; 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.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid or perithecioid, orbicular, irregular, or linear, forming all across the thallus surface, not emerging. Margin: Indistinct; external filaments absent. Exciple: White, brownish yellow, or brown. Epithecium: Apical cells hyaline or brown. Hymenium: Iodine reaction: Lugol’s negative or Lugol’s positive, hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, distinctly anastomosed. Hypothecium: White, red (dark redbrown), or pale brown.

Asci: Tholus thickened, amyloid, entirely amyloid throughout; ocular chamber indistinct; dehiscence bitunicate.

Ascospores: c. 8 per ascus, fusiform, clavate, or curved, (13)-15-40-(53) µm long, (2)-3-5 µm wide, obtuse or aciculate; septa present; transversally septate, (3)-4-8-(14)-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented.

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

Conidia: Bacilliform, filiform, or curved; microconidial, not branched; aseptate.

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

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