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Xanthoparmelia elixii Filson

Data Set Maintenance: Data set compiled (Flora of Australia Vol. 55 Lichens-Lecanorales, Parmeliaceae). Data set author(s): Nöske, N. M. @EXCL@ Clerc, P. (04-11-01). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous. Taxonomic rank: species. Currently accepted name Xanthoparmelia elixii Filson. Xanthoparmelia. Synonyms: Parmelia hypoclystoides auct. non (Müll. Arg.) Gyeln.; Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Xanthoparmelia elixii Filson. Type: Xanthoparmelia elixii Filson.

Taxonomic Literature: Brunonia 7: 203 (1984).

Biogeography: Southern hemispheric; colline, montane, and subalpine. Continent: Australasia. Checklist records: Australia and New Zealand.

Ecology: Biotroph; lichenized; saxicolous; growing under conditions which are moist (more temperate areas of southern Australia, more rarely in arid montane areas).

Thallus: Foliose, subdivided into main parts, irregular, lobed; lobes elongate (sublinear-elongate), imbricate (lobes contigous to imbricate); separate thallus parts 1.5-2.5-(3) mm wide. Thallus Size and Differentiation: 7-10 cm in diameter. Upper Surface: Lime green (yellow-green to olive-green, darkening with age), matt (marginal lobes sometimes shiny, becoming dull and rugose at thallus centre); immaculate; not isidate; not sorediate; lobulate (laciniae subascending at apices or imbricate, sometimes building up thallus into a thick mat). Lower Surface: Present, brown (pale ivory to pale brown); attached by holdfasts (loosely to moderately adnate); rhizinate (often grouped subapically); rhizines sparse, brown (pale to dark brown), not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, up to 10 mm in diam.. Margin: Crenulate (becoming deeply lacerate), distinct (thalline exiple thin, involute). Disk: Urceolate (becoming flattened and distorted), brown (pale brown to dark brown).

Ascospores: 8-9 µm long, 6-7 µm wide.

Conidiomata: Present (common).

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

Secondary Metabolites: Present; throughout the thallus medulla, norstictic acid, salazinic acid, and usnic acid (other secondary metabolites: connorstictic acid, +/- constipatic acid, +/ protoconstipatic acid).

Spot Tests: Cortex: KC – medulla: K + yellow changing to red, C –, KC –, PD + deep yellow.

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

(report generated 04.Okt.2007)

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