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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@ Bungartz F. (06-05-14). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia luminosa (Elix) Hale. Xanthoparmelia. Synonyms: Parmelia luminosa Elix
(Parmelia dichromatica auct. non Hale = Xanthoparmelia dichromatica (Hale) Hale; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia luminosa Elix. Type: Parmelia luminosa Elix; type specimen label data: J. A. Elix 6118; holo: MEL; iso: CBG.

Biogeography: Southern hemispheric; temperate; upper montane (upland areas). Continent: Australasia. Checklist records: Australia (relatively common, endemic, south-eastern Australia (S.A., N.S.W. and A.C.T.)).

Thallus: Foliose, irregular, lobed; lobes imbricate; plane; separate thallus parts 2-5-(8) mm wide. Thallus Size and Differentiation: 6-10 cm in diameter; apex rounded (and crenulate). Upper Surface: Lime green (bright yellow-green, fading after storage, sometimes becoming deep olive-green), glossy (shiny); fissurate (beoming cracked); immaculate; wrinkled (becoming rugose); not isidate; not sorediate. Lower Surface: Present, black (black; brown or often intense red-brown or orange-brown near lobe apices); attached by holdfasts (adnate); rhizinate (robust); rhizines moderately abundant, black (concolorous with lower surface), not branched.

Medulla: White (medulla mostly white; lower medulla yellow-orange to red-orange).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, 2-5 mm in diam.. Margin: Indistinct (involute, becoming undulating and developing irregular cracks). Disk: Excavate, brownish red or dark brown.

Secondary Metabolites: Present; consalazinic acid, salazinic acid, skyrin (in pigmented medulla), and usnic acid.

Spot Tests: Cortex: KC – medulla: K + yellow changing to red (white medulla K+ yellow then dark red, pigmented medulla K+ violet), C –, KC –, PD + deep yellow.

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