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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
     
     
Imshaugia aleurites (Ach.) S.L.F.Mey.
     
  Mycologia 77: 338 (1985)
Lichen aleurites Ach., Lichenogr. Suec. Prodr. 117 (1798); Parmeliopsis aleurites (Ach.) Nyl., Syn. Meth. Lich. 2: 54 (1869). T: Sweden; lecto: H-ACH, fide S.L.F.Meyer, loc. cit.
 
     
  Thallus to 3–5 cm wide. Lobes sublinear, irregularly branched, narrow, 0.8–1.5 mm wide. Upper surface pale ash-grey, dull, flat or shallowly pitted, slightly cobwebby under strong magnification (x 50), emaculate; isidia cylindrical, corticate or rarely becoming granulose and coalescing to form a dense sorediate-isidiate mass in centre of thallus. Lower surface ivory to pale brown; rhizines moderately dense to dense, simple, tufted or not, concolorous. Apothecia not seen. Pycnidia emergent at or near margin, to 0.1 mm wide. Conidia 3–4 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K+ yellow, C-, P+ yellow-orange; containing atranorin, chloroatranorin, thamnolic acid (major) and decarboxythamnolic acid (trace).
     
  Uncommon on dead wood in alpine or subalpine areas of W.A., N.S.W., A.C.T., Vic. and Tas. Widespread in North America, Europe and Asia.  
     
   
     
     
  Elix (1994i)  

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