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Xanthoparmelia parvoincerta 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. (06-05-23). Data set not revised; to be published after submission.

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

Type Information: Basionym: Xanthoparmelia parvoincerta Elix & J. Johnst. Type: Xanthoparmelia parvoincerta Elix & J. Johnst.; type specimen label data: J. A. Elix 10648 & L. H. Elix; holo: CBG.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 304 (1986).

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (scattered and rather rare (or at least seldom collected) endemic species on exposed rock in coastal, hinterland and inland areas of south-western and central Australia (W.A., N.T. and S.A.)).

Ecology: Lichenized; saxicolous; growing sun-exposed.

Thallus: Foliose (small foliose to subcrustose), isotomic-dichotomous (dichotomously to subirregularly branched), lobed; lobes elongate or linear (sublinear), imbricate (or not, radiating at periphery or rarely contiguous); plane; separate thallus parts.5-1-(1.5) mm wide. Thallus Size and Differentiation: 2-4 cm in diameter. Upper Surface: Lime green (darkening with age, lobe margins distinctly blackened), matt (becoming dull) or glossy (shiny); fissurate (older lobes fractured and areolae commonly formed, central lobes eventually eroding); fissures transversely oriented oriented; immaculate; not isidate; not sorediate. Lower Surface: Present, black; attached by holdfasts (tightly adnate); rhizinate; rhizines sparse or moderately abundant, black, not branched.

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages (rare, subpedicellate). Ascocarps: Apothecioid, up to 1 mm in diam.. Margin: Smooth, distinct (entire). Disk: Excavate, dark brown (and shiny).

Ascospores: 7-8 µm long, 5-5.5 µm wide.

Conidiomata: Present (but rare).

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

Secondary Metabolites: Present; atranorin (other secondary metabolites: +/- constipatic acid and +/- protoconstipatic acid), consalazinic acid, salazinic acid, and usnic acid.

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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