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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. (06-05-16). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia metastrigosa Elix. Type: Parmelia metastrigosa Elix; type specimen label data: J. A. Elix 4627; holo: MEL.

Biogeography: Southern hemispheric; subalpine. Continent: Australasia. Checklist records: Australia (endemic, only known from Mt Canobolas, N.S.W., where it is particularly common).

Thallus: Foliose, irregular (dichotomously or irregularly branched), lobed; lobes elongate or linear, ascending (subascending or not); convex (commonly convex); separate thallus parts 1.5-4-(5) mm wide. Thallus Size and Differentiation: 7-12 cm in diameter. Upper Surface: Lime green (lobe margins commonly black), glossy (shiny) (becoming dull), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present (+/- canaliculate), pale brown or dark brown; attached by holdfasts (loosely adnate); rhizinate; rhizines abundant (very dense), pale brown or dark brown (concolorous with lower surface), not branched or branched, dichotomously branched.

Reproduction Strategy: With sexual (and possible asexual) stages (subpedicellate). Ascocarps: Apothecioid, 10-12 mm in diam.. Disk: Plane to weakly convex, dark brown.

Secondary Metabolites: Present; usnic acid (other secondary metabolites: hypostictic acid, hyposalazinic acid and hypoconstictic acid).

Spot Tests: Cortex: KC – medulla: K + yellow or + yellow changing to red (yellow then pale red), C –, KC –, PD –.

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