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Xanthoparmelia donneri 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@ Clerc, P. (04-10-28). Data set not revised; to be published after submission.

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

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

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 231 (1986).

Biogeography: Southern hemispheric (endemic, very rare). Continent: Australasia. Checklist records: Australia.

Ecology: Biotroph; lichenized; growing sun-exposed; substrate non-calciferous (acidic rocks).

Thallus: Foliose (small-foliose to subcrustose), subdivided into main parts, isotomic-dichotomous (dichotomously branched), dispersed throughout and distinctly seperate (widely separate or contiguous), lobed (small-foliose to subcrustose); lobes linear (sublinear); branches applanate (moderately flattened); separate thallus parts.2-.8-(1) mm wide. Thallus Size and Differentiation: 2-4 cm in diameter. Upper Surface: Yellow or lime green (darkening to deep olive-brown or blackish in older lobes), matt; immaculate; not isidate; not sorediate. Lower Surface: Present, black (mainly black, partly dark-brown); attached by holdfasts (very tightly adnate or part of lower surface adhering directly to substratum); rhizinate; rhizines abundant, black, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile (subpedicellate to sessile), abundant, .3-1 mm in diam.. Margin: Crenulate, distinct (smooth, narrow, entire). Disk: Excavate, black.

Ascospores: 7-11 µm long, 5-6 µm wide.

Conidiomata: Present (rare).

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

Secondary Metabolites: Present; throughout the thallus medulla, barbatic acid, norstictic acid, and usnic acid (other secondary metabolites: connorstictic acid, +/- hyposalazinic acid (trace)), metabolite(s) of unresolved identity: present (with or without unidentified compounds (trace)).

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

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

(report generated 04.Okt.2007)

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