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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. (06-05-29). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia rupestris Elix & J. Johnst. Xanthoparmelia. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Xanthoparmelia rupestris Elix & J. Johnst. Type: Xanthoparmelia rupestris Elix & J. Johnst.; type specimen label data: T. H. Nash 20455; holo: ASU.

Biogeography: Southern hemispheric; subalpine. Continent: Australasia. Checklist records: Australia (very rare, endemic, in southern Australia (W.A., N.S.W. and A.C.T.)).

Thallus: Foliose, isotomic-dichotomous (subdichotomously branched, divaricate in places), lobed; lobes elongate or linear, imbricate (lobes moderately imbricate or in places suberect); plane; separate thallus parts.5-1.5 mm wide. Thallus Size and Differentiation: Up to 9 cm in diameter. Upper Surface: Lime green (lobe margins black or brown), glossy (shiny), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present, black or dark brown (very dark brown, shiny or matt, smooth, sometimes with a paler zone towards apices); attached by holdfasts (loosely adnate); rhizinate (robust); rhizines sparse (very sparse), black (concolorous with lower surface) or dark brown, not branched (+/- tufted).

Reproduction Strategy: Only known as sterile, asexually reproducing form (not seen).

Secondary Metabolites: Present; usnic acid (other secondary metabolites: scabrosin 4-acetate 4'-butyrate, scabrosin 4-acetate 4'-hexanoate, scabrosin 4,4'-dibutyrate and scabrosin 4,4' diacetate (trace)).

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