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Xanthoparmelia gongylodes 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. (06-04-26). Data set not revised; to be published after submission.

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

Type Information: Basionym: Xanthoparmelia gongylodes Elix & J. Johnst.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 258 (1986).

Biogeography: Southern hemispheric. Continent: Australasia (rare, endemic). Checklist records: Australia (W.A., S.A. and N.S.W.).

Ecology: Lichenized; saxicolous; growing under conditions which are dry.

Thallus: Crustose (subcrustose to small-foliose), irregular, lobed or umbilicate (marginal lobes flattened, broader, older lobes contorted); lobes imbricate (or not); plane; separate thallus parts 1-2-(3) mm wide. Thallus Size and Differentiation: 2-3 cm in diameter. Upper Surface: Yellow or lime green, matt; immaculate; isidiate (epicorticate, not erumpent); isidia globular (globose becoming cylindrical, knob-like isidia +/- inflated), not ramified (some ultimately extensively branched or eventually becoming knob-like); not sorediate. Lower Surface: Brown or pale brown, dark brown along the margin; attached by holdfasts (loosely adnate to adnate); rhizinate; rhizines sparse or moderately abundant, pale brown, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (but rare). Ascocarps: Apothecioid, soon sessile, 1-4 mm in diam.. Margin: Distinct (and entire); isidiate. Disk: Excavate (becoming undulating), black (black-brown).

Ascospores: 6-8 µm long, 3.5-4.5 µm wide.

Conidiomata: Present (but rare).

Conidia: Bacilliform; 4-5 µm long; 1 µm wide.

Secondary Metabolites: Present; usnic acid (hypostictic acid, hyposalazinic acid and +/- hypoconstictic acid).

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

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

(report generated 04.Okt.2007)

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