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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. (06-05-28). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia remanens Elix. Type: Parmelia remanens Elix; type specimen label data: J. A. Elix 1522; holo: MEL.

Biogeography: Southern hemispheric; coastal and montane. Continent: Australasia. Checklist records: Australia (uncommon, endemic, areas of southern, central and eastern Australia (W.A., N.T., S.A., Qld, N.S.W., Vic. and Tas. (Bass Strait)).

Thallus: Foliose, irregular, lobed; lobes imbricate (or not); plane; separate thallus parts 1.5-3-(5) mm wide. Thallus Size and Differentiation: 4-6 cm in diameter. Upper Surface: Lime green (lobes commonly black margined near apices), glossy (shiny); immaculate; wrinkled (sometimes rugulose); isidiate (isidia moderately dense to dense, to 0.2 mm high, epicorticate, rarely erumpent); isidia inflated or cylindrical (warty, becoming cylindrical), not ramified or ramified, coralloid, darkened at the tip (commonly dark to blackened); not sorediate. Lower Surface: Present, pale brown or dark brown; attached by holdfasts (adnate); rhizinate (slender); rhizines moderately abundant, pale brown or dark brown (concolorous with lower surface), not branched.

Reproduction Strategy: With sexual (and possible asexual) stages (but rare, subpedicellate). Ascocarps: Apothecioid, 1-3 mm in diam.. Margin: Smooth (entire and shiny), distinct (involute); isidiate. Disk: Excavate (distorted, shiny), brownish red or dark brown.

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

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