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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 australasica D.J.Galloway
  New Zealand J. Bot. 18: 531 (1980); Parmelia australasica (D.J.Galloway) Filson, Austral. J. Bot. 30: 519 (1982). T: Karekare Beach, North Auckland, New Zealand, 8 Oct. 1977, J.Bartlett s.n.; holo: CHR; iso: CHR.  
  Thallus foliose, adnate, to 5–12 (–20) 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, emaculate, smooth and shiny at margins, rugose and cracked in centre, without soredia; isidia moderately dense to dense, often forming a dense areolate crust, cylindrical, extensively coralloid-branched, robust, to 2.5 mm tall, broad, 0.1–0.3 mm wide, apices syncorticate. Medulla white. Lower surface smooth and shiny at margins, matt and rugose at centre, black with a narrow brown naked marginal zone; rhizines sparse, simple, black. Apothecia rare, sessile, 2–6 (–8) mm wide; disc smooth, deeply concave, becoming shallowly convex, red-brown; thalline exciple rugose, shiny, becoming conspicuously isidiate. Ascospores 8–11 × 4–6 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, KC+ red, P+ orange; containing usnic acid, salazinic acid (major) and consalazinic acid. Xanthoparmelia australasica distribution
  Common and widespread, occurs in all States and Territories and on Norfolk Is.; also on both islands of New Zealand, and in the U.S.A. and South Africa. Grows on rock.  
  Elix (1994z)  

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

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