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

Type Information: Basionym: Parmelia reptans Kurok. Type: Parmelia reptans Kurok.; type specimen label data: S. Kurokawa 6621; holo: TNS; iso: MEL.

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (widespread and common in W.A., S.A., Qld, N.S.W., A.C.T. and Vic.; also on the South Is. of New Zealand (central Otago, Canterbury)) and New Zealand.

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 mm wide. Thallus Size and Differentiation: 1-5 cm in diameter. Upper Surface: Lemon (citrine) (lobes not black-margined, often pale blackish brown near apices), convex, matt, smooth; maculate (maculate particularly towards lobe apices); not isidate; not sorediate; not lobulate. Lower Surface: Present (partly canaliculate), brownish yellow or grey-brown in the centre, yellow along the margin; attached by holdfasts (loosely adnate); rhizinate (1-2 mm long); rhizines sparse or moderately abundant, black, not branched or branched (rarely sparsely branched).

Reproduction Strategy: With sexual (and possible asexual) stages (but very rare, subpedicellate). Ascocarps: Apothecioid, .5-1.5 mm in diam.. Margin: Crenulate, smooth, distinct (entire and involute). Disk: Excavate (weakly concave) or plane, dark brown.

Secondary Metabolites: Present; fumarprotocetraric acid, protocetraric acid (other secondary metabolites: +/- succinprotocetraric acid and +/- physodalic acid), and usnic acid.

Spot Tests: Cortex: KC – medulla: K + orange (brown), C –, PD + orange (orange-red).

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