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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Xanthoparmelia elixii Filson
  Brunonia 7: 203 (1984). T: 3 km north of Carey Gully, Mount Lofty Ranges, S.A., 22 May 1976, J.A.Elix 2290; holo: MEL; iso: CANB. [Parmelia hypoclystoides auct. non (Müll.Arg.) Gyeln.: J.A.Elix & H.Streimann, J. Hattori Bot. Lab. 51: 88 (1982)]  
  Thallus foliose, loosely to moderately adnate, to 7–10 cm wide. Lobes contiguous to imbricate, irregular, irregularly branched, 1.5–2.5 (–3) mm wide; laciniae subascending at apices or imbricate, sometimes building up thallus into a thick mat, sublinear-elongate, subdichotomously branched, 0.7–1.5 mm wide; apices of marginal lobes subrotund. Upper surface yellow-green to olive-green, darkening with age, generally flat, marginal lobes sometimes shiny, becoming dull and rugose at thallus centre, emaculate, lacking soredia and isidia; lobe margins often black. Medulla white. Lower surface flat, pale ivory to pale brown; rhizines sparse, often grouped subapically, simple, pale to dark brown. Apothecia sessile, to 10 mm wide; disc deeply concave, becoming flattened and distorted, pale brown to dark brown; thalline exciple thin, involute, crenulate, becoming deeply lacerate. Ascospores 8–9 × 6–7 µm. Pycnidia common. Conidia bifusiform, 6–8 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, KC-, P+ yellow; containing usnic acid, norstictic acid (major), connorstictic acid, ±salazinic acid, ±constipatic acid and ±protoconstipatic acid.
  Common, on rock in lowland, mountain and subalpine habitats in more temperate areas of southern Australia (W.A., S.A., N.S.W., A.C.T., Vic. and Tas.), more rarely in arid montane areas; also on the South Is. of New Zealand.  
  Elix (1994z)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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