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Xanthoparmelia incrustata (Kurok. & Filson) 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. (06-05-11). Data set not revised; to be published after submission.

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

Type Information: Basionym: Parmelia incrustata Kurok. & Filson. Type: Parmelia incrustata Kurok. & Filson; type specimen label data: R. B. Filson 11958; holo: MEL.

Taxonomic Literature: Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 269 (1986).

Biogeography: Southern hemispheric. Continent: Australasia. Checklist records: Australia (common but restricted, endemic; inland W.A. and S.A.).

Ecology: Lichenized; saxicolous (on rock and pebbles in arid grassland); growing sun-exposed, under conditions which are dry.

Thallus: Foliose, irregular, lobed; lobes imbricate (or not); convex (marginal lobes convex); separate thallus parts.8-2 mm wide. Thallus Size and Differentiation: 2-4 cm in diameter. Upper Surface: Yellow or lemon (citrine), matt; fissurate; fissures not particularly oriented (irregularly cracked) oriented; not convoluted; wrinkled (older lobes becoming distinctly rugulose and +/- areolate or verruculose); not isidate; not sorediate; lobulate (convex laciniae). Lower Surface: Present (some marginal ol secondary lobes canaliculate), pale brown (ivory to pale brown, often darkening towards lobe apices); attached by holdfasts (adnate); rhizinate (0.1-0.3 mm long); rhizines sparse, brown, not branched (tufted or not).

Medulla: White.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, soon sessile, up to 4 mm in diam.. Margin: Crenulate (slightly crenulate), smooth, persistent, distinct (thick and involute, becoming thin). Disk: Excavate (becoming undulating), dark brown.

Ascospores: 10-12 µm long, 5-6 µm wide.

Conidiomata: Present (but rare).

Conidia: Bifusiform; 6-7 µm long; .5 µm wide.

Secondary Metabolites: Present; norlobaridone (other secondary metabolites: loxodin, rarely scabrosin 4-4'-dibutyrate, scabrosin 4-acetate 4'-butyrate or scabrosin 4-acetate 4'-hexanoate) and usnic acid.

Spot Tests: Cortex: KC – medulla: K –, C –, KC + pink (rose), PD –.

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

(report generated 04.Okt.2007)

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