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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 alternata Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 188 (1986). T: pumping station, Dedari, 120 km from Kambalda, W of Bulla Bulling, W.A., 27 Apr. 1972, N.Sammy 1508; holo: UWA.  
  Thallus foliose, loosely adnate, to 3–5 cm wide. Lobes loosely imbricate, sublinear-elongate, subdichotomously to subirregularly branched; primary lobes 1–2 mm wide, lobulate; laciniae 0.3–1.5 mm wide, often growing over primary lobes, occasionally growing out from lobules in thallus centre, revolute, ascending, coralloid, isidia-like. Upper surface yellow to pale yellow-green, darkening to olive-green, convex, dull, emaculate, smooth at marginal lobes, lacking soredia and isidia; older portions becoming rugulose and cracked. Medulla white. Lower surface ±canaliculate, brown to pale tan; rhizines moderately dense, simple, slender, ±elongate, concolorous or darkening. Apothecia and pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then deep red, C-, P+ intense yellow-orange; containing usnic acid, salazinic acid, consalazinic acid, ±norstictic acid (trace) and ±protocetraric acid (trace).
  Relatively rare, endemic, on soil or debris in arid shrubland in inland W.A., S.A., N.S.W. and Vic.  
  Elix (1994z)  

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

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