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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (02-05-15); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 36. Oropogon. Alectoriaceae (Hue) Tomas. (1949); Lecanorineae; Lecanorales.

Taxonomic Literature: Brodo I.M. & Hawksworth D.L., Op. Bot. Soc. Bot. Lund 42: 1-164
(1977); Esslinger T.L., Syst. Bot. Monographs 28: 1-111 (1989); Esslinger T.L. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 302-304, Tempe (2002).

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

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Fruticose, not subdivided parts. Upper Surface: Black, grey, brown, white, olive, or brownish yellow; special structures absent or present:; not pseudocyphellate or pseudocyphellate; eciliate; without hairs; not isidate (but spinules in one species); not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; 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, soon sessile. Margin: Prominent; external filaments absent. Exciple: Black or white. Periphyses: Absent. Epithecium: Apical cells brown, hyaline, or brownish yellow. Interascal Hyphae: Present, distinctly branched, not or scarcely anastomosed. Hypothecium: White or pale brownish yellow.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean.

Ascospores: 1–2 per ascus, ellipsoid or oblong, 61-160 µm long, 23-52 µm wide, obtuse; septa present; both transversally and longitudinally; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, dark brown, in Lugol's Solution negative, wall not ornamented or ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed or adnate.

Secondary Metabolites: Not detected or present, of the following substance class(es): orcinol depsides, ß-orcinol depsides, ß-orcinol depsidones, (higher) aliphatic acids, (tri-)terpenoids, benzyl esters, (anthra-)quinones, or dibenzofurans [and usnic acids].

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