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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. (06-05-25). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia pseudoamphixantha Elix. Type: Parmelia pseudoamphixantha Elix; type specimen label data: J. A. Elix 3682; holo: MEL.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (scattered, endemic, confined to mallee scrub and Callitris woodland in S.A., N.S.W. and Vic.).

Thallus: Foliose (forming rosettes), isotomic-dichotomous (dichotomously branched), lobed; lobes elongate or linear (sublinear), imbricate (lobes often imbricate, +/- separated near thallus margin); separate thallus parts.7-2-(3) mm wide. Thallus Size and Differentiation: 2-6 cm in diameter. Upper Surface: Lemon (citrine) (lobe margins not black, often blackish-brown near apices), convex, matt, smooth; maculate (distinctly maculate); not isidate; not sorediate; not lobulate. Lower Surface: Present (partly canaliculate), lemon (citrine) or brown (chestnut brown); rhizinate (1-2 mm long); rhizines sparse or moderately abundant, black, not branched or branched (sparsely branched).

Reproduction Strategy: With sexual (and possible asexual) stages (but very rare, subpedicellate). Ascocarps: Apothecioid, .8-1.5 mm in diam.. Margin: Smooth, persistent, distinct (involute and +/- undulating). Disk: Excavate (weakly concave), dark brown.

Secondary Metabolites: Present; norstictic acid (other secondary metabolites: connorstictic acid and +/- hyposalazinic acid (trace)), salazinic acid, and usnic acid.

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

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