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Data Set Maintenance: Data set compiled (from Sonoran Lichen Flora Vol.1). Data set author(s): Bungartz F. (02-02-07). Data set to be published after submission; February 2002.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Currently accepted name Physcia integrata Nyl. Physcia. Physciaceae Zahlbr. (1898); Lecanorineae; Lecanorales.

Biogeography: Subtropical; submontane. Continent: Northern America and Southern America. Checklist records: Mexico and Sonoran Desert (only one locality).

Ecology: Biotroph; lichenized; corticolous or saxicolous; episubstratic; growing sun-exposed or partially shaded; under conditions which are moist or wet.

Thallus: Foliose, subdivided into main parts, lobed; lobes often imbricate; often imbricate; separate thallus parts 1 mm wide. Thallus Size and Differentiation: Up to (5) cm in diameter; apex rounded. Thallus Outline: Irregular or orbicular; margin lobulate (sometimes inner parts dissected into small lobes); darkened the thallus centre; soon disappearing. Upper Surface: Grey or pale grey, usually glossy (shiny), smooth; sometimes maculate; maculae punctiform; pruinose or sometimes epruinose; pruina whitish; eciliate; without hairs; not isidate; not sorediate; not blastidiate; not schizidiate; not lobulate. Lower Surface: Present, black (except for pale lobe tips), black in the centre, grey along the margin, more or less firmly attached attached; attached by holdfasts (true rhizines); rhizines abundant, black, without projections, not branched or branched (rhizines simple to sparsely furcate), sparsely furcate; not sorediate; not tomentose.

Upper Cortex: Present; outer cortical layer paraplectenchymatous; inner cortical layer paraplectenchymatous (with thick brownish to black cell walls). Medulla: White. Lower Cortex: Present.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, soon sessile or substipitate, abundant, up to 2 mm in diam.. Margin: Lecanorine, smooth, persistent, distinct; not isidiate; not ciliate; not hirsute. Disk: Plane; black or dark brown; sometimes pruinose, pruina scarce, white. Epithecium: With epithecium (simple or forked); apical cells subulate (clavate with dark brown cap), pale brown. Hymenium: White; not inspers. Interascal Hyphae: Scarcely branched (paraphyses simple or forked above). Subhymenium: White. Hypothecium: White; not inspers.

Ascospores: Pachysporaria-type, c. 8 per ascus, ellipsoid, (18.5)-21-26-(32.5) µm long, (8.5)-9-11.5-(14) µm wide; septa present; transversally septate; 1-transversally septate; wall thickened at the septum, becoming pigmented, dark brown (at maturity) or middle brown.

Conidia: Bacilliform (not bacilliform but cylindrical); 4-6 µm long; 1 µm wide.

Secondary Metabolites: Present; only in the upper part of the cortex or throughout the thallus medulla, hopane-6a,22-diol (, lecotyline and unidentified triterpenes in medulla), metabolite(s) of unresolved identity: present (triterpenes).

Spot Tests: Present reactions. Upper surface: K + deep yellow, C –, KC –, PD + yellow; cortex: KC + deep yellow, – medulla: K + yellow; C –, KC –, PD + deep yellow; soredia: K + deep yellow; KC –.

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