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Xanthoparmelia tegeta Elix & J. Johnst.

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

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

Type Information: Basionym: Xanthoparmelia tegeta Elix & J. Johnst. Type: Xanthoparmelia tegeta Elix & J. Johnst.; type specimen label data: J. A. Elix 1718; holo: CBG; iso: MEL.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 339 (1986).

Biogeography: Southern hemispheric; upper montane and subalpine. Continent: Africa (South Africa) and Australasia. Checklist records: Australia (relatively common cooler areas of southern Australia (W.A., S.A., N.S.W., A.C.T., Vic. and Tas.); also on the South Is. of New Zealand) and New Zealand.

Ecology: Lichenized; saxicolous.

Thallus: Foliose, irregular (dichotomously to subirregularly branched, generally irregularly constricted), lobed; lobes elongate or linear, imbricate (contiguous to imbricate); plane; separate thallus parts.3-1-(1.5) mm wide. Thallus Size and Differentiation: 4-7 cm in diameter. Upper Surface: Lime green (darkening with age; with conspicuous black margins), matt (becoming dull) or glossy (shiny), smooth; immaculate; not isidate; not sorediate. Lower Surface: Present, black (shiny); attached by holdfasts (loosely to moderately adnate); rhizinate (to 2 mm long); rhizines moderately abundant (+/- projecting beyond margins, often rhizinate to margins and appearing ciliate), black, not branched (rarely branched) or branched, dichotomously branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (but rare). Ascocarps: Apothecioid, soon sessile, .5-1.5 mm in diam.. Margin: Smooth. Disk: Excavate, dark brown.

Ascospores: 6-9.5 µm long, 3.5-5.5 µm wide.

Conidiomata: Present (common).

Conidia: Bacilliform; 6-7 µm long; .5 µm wide.

Secondary Metabolites: Present; constictic acid, norstictic acid (small quantities of nostictic acid and cryptostictic acid), stictic acid, and usnic acid.

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

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

(report generated 04.Okt.2007)

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