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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 bicolorans Elix & Kantvilas
  Mycotaxon 73: 442 (1999). T: Victoria: Mt Raymond, 13 km E of Orbost, 37°43'S, 148°36'E, 290 m, on exposed granite rocks in regrowth Eucalyptus forest, J. A. Elix 19454 & H. Streimann, 27 Sept. 1985; holo: CANB.  
  Thallus foliose, adnate, to 7 cm wide.  Lobes imbricate, sublinear, irregularly branched, 0.5-1.5 mm wide, laciniate; laciniae imbricate, sublinear-elongate, subdi- or trichotomously branched, 0.3-0.7(-1.0) mm wide.  Upper surface yellow-green, darkening with age, flat to slightly concave, emaculate, ±cracked, lacking isidia and soredia; lobe margins often blackened, particularly towards the apices.  Medulla white.  Lower surface flat, shiny, rugulose, black or brown-black in a broad marginal zone, brown to pale brown at the thallus centre; rhizines sparse to moderately dense, slender, simple or occasionally tufted, concolorous.  Apothecia sessile, to 3 mm wide; disc concave, becoming flattened, dark brown; thalline exciple smooth, thin, ±crenulate.  Ascospores ellipsoid, 7-9 x 4.5-5.5 µm.  Pycnidia common, immersed. Conidia bifusiform, 6-8 x 0.7 µm. CHEMISTRY: Cortex K-, medulla K+ yellow then red, C-, P+ yellow-orange;  containing usnic acid (minor), norstictic acid (major), connorstictic acid (minor/trace).
  This species appears to be scattered on rocks in the cooler areas of south-eastern Australia (N.S.W., Vic. and Tas.).  
  Elix & Kantvilas (1999a)  

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

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