Nuytsia 16(1): 63-76 (2006)
Basionym: Data lacking.
Synonym: Index Fungorum
Protolog: Data lacking.
Type locality: Australia: Victoria, Hopetoun - Patchewolock Road, 5 km NE of Hopetoun, on Rhagodia along grazed roadside verge with Rhagodia and Eucalyptus; 80 m alt., 1987, Curnow & Lepp 1422 (holo: CBG, n.v.; iso: LD!, MEL!).
Barcode: Data lacking.
Coordinates: Data lacking.
Thallus: very small, 6-15(-25) mm across, densely adpressed, more or less covered by apothecia, yellow-orange, reddish-orange sometimes to greyish-yellow, brownish-yellow or grey; lobes less developed or invisible beyond the apothecia, occasionally seen as single separate lobes of irregular shape up to 1-1.5(-2) mm long and c. (0.2-)0.5-1.5(-2.5) mm wide in young thalli, irregularly elongated, mainly separate, usually unbranched, plane or flat, often with primordial, unwarted zone of lobes not wider of 1(-2) mm; thallus in section 100-110(-150) mm thick; upper cortex 10-12.5(-17.5) mm thick, true paraplectenchymatous; algal layer 16-20(-50) mm thick; medulla rather lax composed of single or groups of long horizontally orientated hyphae, 4-5(-6) mm thick, sometimes with oil droplets; lower cortex thin, 10-15(-20) mm thick, true paraplectenchymatous. Hapters rare and mainly at the marginal zone of lobes. Apothecia located in central part of the thallus, usually covering the lobes, c. (0.4-)1-1.2(-2) mm diam., regularly rounded to irregularly pressed, disc darker reddish-orange, becoming convex and biatorine when mature. In section zeorine, thalline exciple paraplectenchymatous; true exciple up to 50-60 mm thick at the uppermost part, well developed in the basal part, 10-15 mm thick scleroplectenchymatous to somewhat pseudoprosoplectenchymatous. Hymenium 45-50(-60) mm high; subhymenium up to 20 mm thick, asci (45-)48-50 x 10-12 mm; paraphyses c. 2.0 mm diam., the uppermost cells up to 7 mm diam., with oil droplets; Ascospores (10-)12-13(-16) x 5-6 mm, septum 3-4.5(-6) mm thick. Spermatia oblong or narrowly to widely ellipsoid, 2.2-2.7 x 1-1.2(-1.5) mm. (Kondratyuk et al. 2006: 69-70).
Photobiont: Data lacking.
Chemistry: Elix (1988) reported three compounds, of which teloschistin was the major component, with parietin and parietinic acid as minor components. From our data, X. elixir is characterized by chemosyndrom A3 (cf. Søchting 1997, 2002). (Kondratyuk et al. 2006: 69-70).
Ecology: Data lacking.
Molecular data: Genbank
Distribution: Database
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