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

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Currently accepted name Xanthoparmelia taractica (Kremp.) Hale. Xanthoparmelia. Synonyms: Parmelia taractica Kremp.
Parmelia conspersa var. polyphylloides Müll. Arg.
Parmelia polyphylloides (Müll. Arg.) Gyeln.
(Parmelia conspersa var. hypoclista auct. non Nyl. = Xanthoparmelia sublaevis (Cout.) Hale
(Parmelia pulvinaris auct. non (Zahlbr.) Gyeln. = Xanthoparmelia pseudohungarica (Gyeln.) Hale;
Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Basionym: Parmelia taractica Kremp. Type: Parmelia taractica Kremp.; type specimen label data: Lorentz & Hieronymus; holo: M.

Taxonomic Literature: Phytologia 28: 489 (1974).

Biogeography: Southern hemispheric. Continent: Australasia and Southern America (Argentina). Checklist records: Australia (common in lowland and mountain areas of southern Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.)).

Ecology: Lichenized; terricolous (found on soil and spreading onto rock); growing under conditions which are dry.

Thallus: Foliose, isotomic-dichotomous (primary and marginal lobes subdichotomously branched), lobed; lobes elongate or linear (sublinear to subirregular), imbricate (lobes variable, often forming a dense, imbricate mat); plane; separate thallus parts 2-4-(8) mm wide. Thallus Size and Differentiation: 7-10 cm in diameter; apex rounded (subrotund). Upper Surface: Lime green (darkening with age), glossy (shiny), smooth (to slightly rugulose); fissurate (developing cracks in older lobes); fissures transversely oriented oriented; immaculate; wrinkled (becoming +/- rugose); not isidate; not sorediate; lobulate (laciniae sometimes developing from thallus centre, elongated dichotomously branched, 0.5-1.5 mm wide, without lobules). Lower Surface: Present, brown (darker in centre, often shiny) or pale brown; attached by holdfasts (loosely to moderately adnate); wrinkled (rugose and papillate); rhizinate (slender); rhizines moderately abundant (especially near lobe margins), brown (concolorous with lower surface) or pale brown, not branched (often tufted).

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (occasional). Ascocarps: Apothecioid, soon sessile, 3-6 mm in diam.. Margin: Crenulate (becoming crenulate), distinct (rugulose, entire and involute). Disk: Excavate to plane (becoming flat), brownish red.

Ascospores: 8-10 µm long, 6 µm wide.

Conidiomata: Present (common).

Conidia: Bifusiform; 5-7 µm long; 0 µm wide.

Secondary Metabolites: Present; consalazinic acid, salazinic acid, and usnic acid.

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

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

(report generated 04.Okt.2007)

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