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Xanthoparmelia subnuda (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 subnuda (Kurok.) Hale. Xanthoparmelia. Synonyms: Parmelia subnuda Kurok.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia subnuda Kurok. Type: Parmelia subnuda Kurok.; type specimen label data: S. Kurokawa 5178; holo: TNS.

Taxonomic Literature: Phytologia 28: 489 (1974).

Biogeography: Southern hemispheric; temperate. Continent: Australasia. Checklist records: Australia and New Zealand.

Ecology: Lichenized; saxicolous.

Thallus: Foliose, isotomic-dichotomous (di- or trichotomously branched), lobed; lobes elongate or linear (sublinear to linear), imbricate; plane; separate thallus parts.3-1 mm wide. Thallus Size and Differentiation: 4-7 cm in diameter; apex curved upwards (often ascending). Upper Surface: Lime green (lobe margins often blackened), matt or glossy (shiny), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present, black; attached by holdfasts (loosely adnate); wrinkled; not rhizinate or rhizinate (robust, 0.2-1 mm long); rhizines sparse (very sparse), black, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (subpedicellate). Ascocarps: Apothecioid, 2-10 mm in diam.. Margin: Smooth (emaculate, undulating or not). Disk: Excavate, dark brown.

Ascospores: 7-8 µm long, 5 µm wide.

Conidiomata: Present (but rare).

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

Secondary Metabolites: Present; norstictic acid (norstictic acid (major) and connorstictic acid), salazinic acid, and usnic acid.

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

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

(report generated 04.Okt.2007)

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