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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 exuviata (Kurok.) Hale
  Mycotaxon 20: 79 (1984); Parmelia exuviata Kurok., Bull. Natl Sci. Mus., ser. B, 8: 36 (1982). T: east of Cooma on the Numeralla Road, N.S.W., 2 Dec. 1965, S.Kurokawa 6449; holo: TNS; iso: CANB.  
  Thallus foliose, loosely adnate, to 4–9 cm wide. Lobes imbricate or not, short, flat, sublinear, irregularly branched, 1.5–3 mm wide. Upper surface yellow-green, dull, emaculate, without soredia; older lobes becoming rugulose, cracked and ± areolate; upper cortex fragile, occasionally flaking off in places; isidia numerous, simple, warty or sparingly branched, cylindrical and ±inflated at apices; isidia apices epicorticate and only rarely erumpent, not sorediose. Medulla white. Lower surface pale brown to brown; rhizines sparse, 0.1–0.2 mm long, concolorous. Apothecia sessile, 2–3 mm wide; disc concave, brown to dark brown; thalline exciple isidiate. No mature ascospores seen. Pycnidia common. Conidia bifusiform, 6–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC-, P-; containing usnic acid, exuviatic acid A and exuviatic acid B.
  Rare, endemic, in upland regions, in arid or subarid areas or areas of moderate rainfall in eastern and central Australia (S.A., Qld and N.S.W.); also on Lord Howe Is. Grows on rock.  
  Elix (1994z)  

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

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