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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. (06-04-19). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia flavescentireagens (Gyeln.) D. J. Galloway. Xanthoparmelia. Synonyms: Parmelia flavescentireagens Gyeln.
Parmelia conspersa var. austroafricana auct. non (Stirt.) Stizenb. = Xanthoparmelia austroafricana (Stirt.) Hale; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia flavescentireagens Gyeln. Type: Parmelia flavescentireagens Gyeln.

Biogeography: Southern hemispheric (ubiquitous). Continent: Australasia. Checklist records: Australia (throughout southern and eastern Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.), also on both islands of New Zealand).

Ecology: Lichenized; terricolous, corticolous (rarely on dead wood), or saxicolous.

Thallus: Foliose, irregular (subirregular), lobed; lobes linear (sublinear); rounded at the front; separate thallus parts 1.5-2.5-(10) mm wide. Thallus Size and Differentiation: Up to 15 cm in diameter; apex rounded. Upper Surface: Lemon (citrine) (to yellow-green, darkening with age), glossy (shiny), smooth; immaculate; not isidate; not sorediate; not lobulate. Lower Surface: Present (canaliculate), brown (to pale ivory, darker towards lobe apices where it is commonly blackened); attached by holdfasts (loosely to moderately adnate); rhizinate; rhizines moderately abundant (often grouped subapically), brown (concolorous with lower surface), not branched (slender, short).

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, up to 10 mm in diam.. Margin: Crenulate, smooth, indistinct. Disk: Urceolate, pale brown.

Secondary Metabolites: Present; norlobaridone (other secondary metabolites: loxodin, +/- constipatic acid, +/- protoconstipatic acid, +/- scabrosin 4,4'-diacetate, +/- scabrosin 4-acetate 4'butyrate, +/- scabrosin 4-acetate 4'hexanoate, +/- scabrosin 4,4' dibutyrate, +/- conloxoodin and +/- conorlobaridone) and usnic acid.

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