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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 subluminosa Hale
     
  Mycotaxon 34: 561 (1989). T: west of Canberra, A.C.T., 8 June 1982, M.E.Hale 58524; holo: US; iso: CANB.  
     
  Thallus foliose, loosely to moderately adnate, to 5–12 cm wide. Lobes often markedly imbricate, flat, irregular, irregularly branched, 2–3.5 (–5) mm wide; laciniae similar to marginal lobes, sometimes building thallus up into a thick mat; apices subrotund. Upper surface yellow-green, smooth, shiny at margins, emaculate, rugose and cracked in centre, without soredia; isidia moderately dense to dense, laminal, often forming a dense areolate crust, robust, broad, cylindrical, extensively coralloid-branched, to 2.5 mm high; isidia apices syncorticate and intact. Medulla mostly white; lower medulla intense orange. Lower surface matt and rugose at centre, smooth and shiny at margins, black with a narrow brown to red-brown naked marginal zone; rhizines sparse, simple, black. Apothecia not seen. Pycnidia common. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; white medulla K+ yellow then dark red, C-, KC+ red, P+ orange; pigmented medulla K+ violet; containing usnic acid, salazinic acid (major), consalazinic acid (minor) and norstictic acid (trace); skyrin and an unidentified anthraquinone (trace) in the pigmented medulla only.
     
  Very rare, endemic, known from S.A. and A.C.T. Grows on rock.  
     
   
     
     
  Elix (1994z)  

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