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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. (06-06-01). Data set not revised; to be published after submission.

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

Type Information: Basionym: Xanthoparmelia spargenosa Elix & J. Johnst. Type: Xanthoparmelia spargenosa Elix & J. Johnst.; type specimen label data: M. E. Hale 65004; holo: US.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (very rare and scattered, in lowland temperate or subarid areas (S.A., Qld and N.S.W.)).

Thallus: Foliose, irregular, lobed; lobes imbricate (lobes densly imbricate to contiguous); plane; separate thallus parts 1-2.5 mm wide. Thallus Size and Differentiation: Up to 5 cm in diameter; apex rounded. Thallus Outline: Margin crenate. Upper Surface: Lime green (lobe margins often black), glossy (shiny), smooth; immaculate; not isidate; not sorediate; lobulate. Lower Surface: Present, brown (pale ivory to brown); attached by holdfasts; rhizinate (robust, often grouped subapically); rhizines sparse, brown (concolorous with lower surface), not branched.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, 1-3 mm in diam.. Margin: Persistent, indistinct (becoming +/- undulating). Disk: Excavate (shallowly), dark brown.

Secondary Metabolites: Present; usnic acid (other secondary metabolites: exuviatic acid B and +/- exuviatic acid A).

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