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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Tehler A. (95-11-27) and Scholz P. (02-05-16); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 24. Roccellina. Synonyms: Lobodirina Follmann; Roccellaceae Chevall. (1826); Arthoniales.

Type Information: Type: Roccellina condensata Darb. = R. cerebriformis (Mont.) Tehler.

Taxonomic Literature: Tehler A., Opera Bot. 70: 1-86 (1983); Tehler A., Can. J. Bot. 68:
2458-2492 (1989); Tehler A. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 454-455, Tempe (2002); Tehler A., Wright A.E. & Galloway D.J., Lichenologist 23: 403-407 (1991).

Biogeography: Checklist records: New Zealand, Sonoran Desert, and United States and Canada (continental).

Lichen Photobionts: Primary photobiont present; trentepohlioid. Primary photobiont taxonomy: Trentepohlia; Trentepohliaceae; Trentepohliales, Ulvophyceae, Eukariota. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts, squamulose, placodioid, or subfruticose. Upper Surface: Grey, yellow, brown, white, olive, or brownish yellow; 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.

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 to substipitate, stromatic. Margin: Distinct to prominent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black or brown.

Ascospores: c. 8 per ascus, curved or fusiform, 16-36.5 µm long, 3.5-7 µm wide, obtuse or aciculate; septa present; transversally septate, 3-transversally septate; wall thin, 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 or sessile to stipitate, formed all accross the thallus surface.

Secondary Metabolites: Present, of the following substance class(es): orcinol depsides, ß-orcinol depsides, ß-orcinol depsidones, (higher) aliphatic acids, and dibenzofurans [and usnic acids].

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