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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 pumila (Kurok. & Filson) Elix & J. Johnst. Xanthoparmelia. Synonyms: Parmelia pumila Kurok. & Filson; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia pumila Kurok. & Filson. Type: Parmelia pumila Kurok. & Filson; type specimen label data: R. B. Filson 11740; holo: MEL.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (uncommon, endemic, in mallee srub and arid shrubland of inland areas of W.A., S.A. and N.S.W.).

Thallus: Foliose, irregular, lobed; lobes imbricate; concave (+/- concave); separate thallus parts.7-1.5 mm wide. Thallus Size and Differentiation: 3-10 cm in diameter. Upper Surface: Yellow (bright yellow) or lemon (citrine), matt; immaculate; pruinose (often whitish yellow pruinose at lobe apices); wrinkled (+/ rugulose); not isidate; not sorediate; lobulate (lobules subterete to terete, branched, ascending, 0.2-0.4 mm wide, often blackened at apices). Lower Surface: Present (canaliculate or not), black in the centre, yellow or brown along the margin; attached by holdfasts (adnate); rhizinate (slender, 0.2-0.4 mm long); rhizines sparse or moderately abundant, black, not branched.

Reproduction Strategy: With sexual (and possible asexual) stages (but very rare, subpedicellate). Ascocarps: Apothecioid, up to 2.5 mm in diam.. Margin: Crenulate (becoming incised), distinct (prominent). Disk: Excavate (slightly concave) or plane, dark brown.

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

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

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