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Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Clerc, P. (04-10-10). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia cheelii (Gyeln.) Hale. Xanthoparmelia. Synonyms: Parmelia conspersa var. nigromarginata Stirt.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia cheelii Gyeln. Type: Xanthoparmelia cheelii (Gyeln.) Hale.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia and New Zealand.

Thallus: Foliose, subdivided into main parts, isotomic-dichotomous (subdichotomously branched), lobed; lobes elongate (sublinear-elongate), imbricate (very densely imbricate building up thallus into a thick mat, not ascending at apices); separate thallus parts.5-1-(1.5) mm wide. Thallus Size and Differentiation: 5-10 cm in diameter; main branches basally not constricted. Upper Surface: Lime green, glossy (shiny), smooth; immaculate; not isidate; not sorediate; lobulate (margins becoming denselx short-laciniate at thallus centre, laciniae 0,5-1 mm wide). Lower Surface: Present (smooth), black, black in the centre, brown along the margin; attached by holdfasts (loosely adnate); rhizinate; rhizines sparse (very short and robust), black, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid (subpedicellate), up to 7 mm in diam.. Margin: Persistent. Disk: Urceolate, brownish red.

Secondary Metabolites: Present; consalazinic acid, salazinic acid, and usnic acid.

Spot Tests: Cortex: KC – medulla: K + yellow changing to red, C –, KC –, PD + orange (orange-red).

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