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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Thell A. (99-04-10) and 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: 2. Kaernefeltia. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Taxonomic Literature: Thell A. in: Nash T.H. III et al. (eds) Lichen Flora of the Greater Sonoran Desert Region vol. 1, 256-257, Tempe (2002); Thell A. & Goward T., Bryologist 99: 125-136 (1996).

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

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

Thallus: Foliose, crustose, or fruticose, not subdivided parts, subfruticose or granular, lobed. Thallus Outline: Soon disappearing. Upper Surface: Greenish black, grey, brown, olive, or brownish yellow; special structures absent or present:; not pseudocyphellate or pseudocyphellate; eciliate or ciliate; without hairs; not isidate or isidiate; not sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate or 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, orbicular, forming all across the thallus surface or directly at the thallus margin, soon sessile, substipitate, or stipitate. Margin: Distinct or prominent; external filaments absent. Exciple: White or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

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

Ascospores: c. 8 per ascus, broadly ellipsoid, ellipsoid, oblong-obtuse, or oblong, 6-10.5 µm long, 2.5-5 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, sessile, or stipitate, formed all accross the thallus surface or along the thallus periphery.

Conidiogeneous Cells: Apical. Conidia: Bifusiform; not branched; aseptate; cell wall hyaline.

Secondary Metabolites: Present, of the following substance class(es): (higher) aliphatic acids.

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