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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 ustulata (Kurok. & Filson) Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 344 (1986); Parmelia ustulata Kurok. & Filson, Bull. Natl Sci. Mus., ser. B, 1: 46 (1975). T: Memory Cove, Cape Catastrophe, Eyre Peninsula, S.A., 24 Oct. 1970, R.B.Filson 11834; holo: MEL.  
  Thallus foliose, moderately adnate to adnate, to c. 7 cm wide. Lobes imbricate or not, flat, irregular to sublinear-elongate, irregularly branched, 1–2.5 (–4) mm wide; laciniae sometimes developing, imbricate, 0.5–1 mm wide. Upper surface yellow-green to olive-green, darkening in older lobes, dull, shiny near apices, emaculate, lacking soredia and isidia; older lobes becoming irregularly cracked; lobe margins often black. Medulla white. Lower surface pale brown, often darker towards lobe apices; rhizines sparse, simple, slender, 0.2 mm long, concolorous. Apothecia sessile, 1.5–7 mm wide; disc concave, becoming flattened or irregular and crenulate with age, dark brown; thalline exciple smooth, entire, thin. Ascospores 8–10 × 5–6 µm. Pycnidia common. Conidia bifusiform, 5–6 × 0.5 µm CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC-, P-; containing usnic acid, constipatic acid, ±protoconstipatic acid, ±dehydroconstipatic acid, ±pertusaric acid and with or without unidentified fatty acids.
  Scattered, on rock in coastal, drier mountain, subalpine and subarid areas of southern and eastern Australia (S.A., Qld, N.S.W., A.C.T. and Vic.); also on the South Is. of New Zealand (MacKenzie Country).  
  Elix (1994z)  

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

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