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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 pertinax (Kurok. & Filson) Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 306 (1986); Parmelia pertinax Kurok. & Filson, Bull. Natl Sci. Mus., ser. B, 1: 41 (1975). T: south of old dam on western side of the Corunna Range, Eyre Peninsula, S.A., 21 Oct. 1970, R.B.Filson 11728; holo: MEL.  
  Thallus foliose to subcrustose, adnate to tightly adnate, to 5–8 cm wide. Lobes contiguous to imbricate, flat, sublinear-elongate, irregularly branched, 1–2.5 mm wide; apices rotund. Upper surface pale yellow-green to olive-green, darkening with age, dull, emaculate, not rugulose, lacking isidia and soredia; older lobes often developing transverse cracks and becoming areolate. Medulla white. Lower surface pale brown to dark brown; rhizines moderately dense, simple, c. 0.1 mm long, dark brown. Apothecia sessile, 2–8 mm wide; disc concave, dark brown to black; thalline exciple smooth. Ascospores 8–10 × 5–7 µm. Pycnidia common. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ pale yellow then brown, C-, KC-, P+ orange-red; containing usnic acid, fumarprotocetraric acid, succinprotocetraric acid and ±protocetraric acid (trace).
  Relatively common, endemic, on rock in drier tableland, subarid and arid areas of southern Australia (W.A., S.A., Qld, N.S.W., A.C.T. and Vic.), particularly semiarid chenopod shrublands of inland S.A.  
  Elix (1994z)  

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

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