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Xanthoparmelia subdistorta (Kurok.) Hale

Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Bungartz F. (06-06-03). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia subdistorta (Kurok.) Hale. Xanthoparmelia. Synonyms: Parmelia subdistorta Kurok.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia subdistorta Kurok. Type: Parmelia subdistorta Kurok.; type specimen label data: S. Kurokawa 6617; holo: TNS; iso: M.

Taxonomic Literature: Phytologia 28: 489 (1974).

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (in mallee scrub and and shrubland areas of southern Australia (W.A., S.A. and Vic.)).

Ecology: Lichenized; terricolous (grows on soil or spreads onto pebbles from soil); growing under conditions which are dry.

Thallus: Foliose (forming rosettes), isotomic-dichotomous, lobed; lobes elongate or linear (sublinear), imbricate (and strongly convoluted); separate thallus parts.8-1 mm wide. Thallus Size and Differentiation: 6-10 cm in diameter. Upper Surface: Lime green (pale yellow-green; lobe apices often blackened), convex, glossy (shiny); immaculate; wrinkled; not isidate; not sorediate; lobulate. Lower Surface: Present, brown or dark brown (darkening to dark greyish brown at apices); attached by holdfasts; rhizinate; rhizines sparse, brown, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (but rare). Ascocarps: Apothecioid, soon sessile, 2-5 mm in diam.. Margin: Distinct (and revolute). Disk: Excavate, pale brown or dark brown.

Ascospores: 10 µm long, 7 µm wide.

Conidiomata: Present (common).

Conidia: Bifusiform; 6-8 µm long; .5 µm wide.

Secondary Metabolites: Present; norlobaridone (and loxodin) and usnic acid.

Spot Tests: Cortex: KC – medulla: K –, C –, KC + pink (rose), PD –.

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

(report generated 04.Okt.2007)

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