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Xanthoparmelia nebulosa (Kurok. & Filson) Elix & J. Johnst.

Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Bungartz F. (06-05-19). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia nebulosa Kurok. & Filson. Type: Parmelia nebulosa Kurok. & Filson; type specimen label data: S. Kurokawa 6350; holo: TNS; iso: CBG.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 295 (1986).

Biogeography: Southern hemispheric; subalpine and alpine. Continent: Australasia. Checklist records: Australia (rare, south-eastern Australia (N.S.W., A.C.T. and Vic.)) and New Zealand.

Ecology: Lichenized; saxicolous; growing sun-exposed.

Thallus: Foliose, isotomic-dichotomous (subdichotomously branched), lobed; lobes linear (sublinear), imbricate; plane; separate thallus parts 1-2.5-(5) mm wide. Thallus Size and Differentiation: 6-10 cm in diameter; apex rounded. Thallus Outline: Margin crenate. Upper Surface: Lime green (sometimes becoming deep olive-green or blackening; lobe margins often black, particularly towards apices), glossy (shiny); fissurate (becoming cracked); immaculate; wrinkled (becoming rugose); not isidate; not sorediate; lobulate (laciniae imbricate and entangled, sometimes overgrowing marginal lobes, to 1 mm wide). Lower Surface: Present, brown (pale ivory to brown); attached by holdfasts (loosely to moderately adnate); rhizinate (slender); rhizines moderately abundant, brownish yellow or brown, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile (or shortly pedicellate), 2-7 mm in diam.. Margin: Distinct (involute, becoming undulating and devoloping irregular cracks). Disk: Excavate, dark brown.

Ascospores: 8.5-12 µm long, 5-7 µm wide.

Conidiomata: Present (numerous).

Conidia: Bifusiform; 5-6 µm long; .5 µm wide.

Secondary Metabolites: Present; usnic acid (other secondary metabolites: dehydroconstipatic acid (trace), pertusaric acid (trace), constipatic acid (trace) and protoconstipatic acid (trace)), metabolite(s) of unresolved identity: present (unidentified fatty acid (minor)).

Spot Tests: Cortex: KC – medulla: K –, C –, KC –, PD –.

UV-Fluorescence: Upper thallus surface – (negative).

(report generated 04.Okt.2007)

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