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Xanthoparmelia tasmanica (Hook. f. & Taylor) 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. (06-06-05). Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia tasmanica (Hook. f. & Taylor) Hale. Xanthoparmelia. Synonyms: Parmelia tasmanica Hook. f. & Taylor
Parmelia incisa Taylor
Parmelia conspersa var. incisa (Taylor) Zahlbr.
Parmelia stramineonitens Zahlbr.
Parmelia conspersa var. laxa Müll. Arg.
Parmelia laxa (Müll. Arg.) Gyeln.
Parmelia pulvinaris var. lacinulata Gyeln.;
Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia tasmanica Hook. f. & Taylor. Type: Parmelia tasmanica Hook. f. & Taylor; type specimen label data: R. C. Gunn; lecto: FH; isolecto: BM.

Taxonomic Literature: Phytologia 28: 489 (1974).

Biogeography: Southern hemispheric; temperate. Continent: Africa (Kenya and South Africa), Australasia, Northern America, and Southern America. Checklist records: Australia (one of the most common species of Xanthoparmelia throughout the more temperate areas of Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.) also occasionally found in more arid areas and on Lord Howe is.; also on both islands of New Zealand, in North America (U.S.A.), Central America, Kenya and South Africa), New Zealand, and United States and Canada (continental).

Ecology: Lichenized; terricolous (rarely spreading onto soil) or saxicolous.

Thallus: Foliose, irregular (subirregularly branched), lobed; lobes linear (sublinear), imbricate (densly imbricate, very variable); plane; separate thallus parts 2-5 mm wide. Thallus Size and Differentiation: Up to 15 cm in diameter; apex rounded (apices smoothly rounded or shallowly incised). Upper Surface: Lime green (blackening on older lobes; lobe margins brown or black), glossy (shiny), smooth; immaculate; not isidate; not sorediate; lobulate (often with masses of sublinear-elongate, subdichotomously branched laciniae (1-2 mm wide) building up thallus into a thick mat). Lower Surface: Present, black (jet black and smooth) in the centre, brown along the margin; attached by holdfasts (loosely adnate); rhizinate (robust); rhizines sparse, black, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (common, subpedicellate). Ascocarps: Apothecioid, up to 15 mm in diam.. Margin: Crenulate (involute at first, entire or crenulate), smooth (and shiny). Disk: Urceolate or plane, dark brown.

Ascospores: 10-11 µm long, 6-7 µm wide.

Conidiomata: Present (common).

Conidia: Bifusiform; 5-7 µm long; .5 µm wide.

Secondary Metabolites: Present; consalazinic acid, norstictic acid (rarely norstictic acid (trace) and protocetraric acid (trace)), protocetraric acid, salazinic acid, and usnic acid.

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

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

(report generated 04.Okt.2007)


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