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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. (04-10-27). Data set not revised; to be published after submission.

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

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

Biogeography: Southern hemispheric; subalpine and alpine. Continent: Australasia and Southern America. Checklist records: Australia and New Zealand.

Thallus: Foliose, subdivided into main parts, irregular, lobed; lobes imbricate (or not); branches applanate (moderately flattened); separate thallus parts 2-5-(8) mm wide. Thallus Size and Differentiation: Up to 6 cm in diameter. Thallus Outline: Margin crenate. Upper Surface: Lime green (lobe margins often black), glossy (shiny), smooth; immaculate; pruinose (appearing pruinose or subgranulate); isidiate (apices epicorticate, erumpent and becoming pustulate, barely sorediate); lobulate. Lower Surface: Present, brown (pale brown to black-brown, darker towards lobe apices); attached by holdfasts (loosely to moderately adnate); rhizinate; rhizines sparse or moderately abundant, black, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages (subpedicellate). Ascocarps: Apothecioid, sparse, 1-3 mm in diam.. Margin: Persistent, distinct (entire); isidiate; with pseudocyphellae (pustulate-isidiate) pseudocyphellae. Disk: Weakly convex (becoming +/- flat), brown (dark brown to black-brown).

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

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

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