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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 nigraoleosa Elix & J.Johnst.
  Mycotaxon 31: 506 (1988). T: Mt Remarkable, Melrose, Flinders Ranges, S.A., 26 Oct. 1984, J.A.Elix 17748 & L.H.Elix; holo: CANB. *****[Xanthoparmelia subnigra auct. non Hale: J.A.Elix & J.Johnston, Mycotaxon 29: 371 (1987)].  
  Thallus small-foliose to subcrustose, tightly adnate, to 3–6 cm wide. Lobes barely imbricate, contiguous, flat, irregular to sublinear-elongate, irregularly branched, 0.8–1.5 mm wide. Upper surface yellow-green, darkening and becoming greyish black, dull, shiny near lobe apices, emaculate, lacking soredia and isidia; becoming cracked and areolate in older central portion of thallus; areolae c. 1 mm wide; lobe margins black near apices. Medulla white. Lower surface black, often brown at lobe apices; rhizines moderately dense, simple, slender, black. Apothecia common, sessile to subpedicellate, 1–2.5 mm wide; disc concave, dark brown; thalline exciple smooth, thin, continuous. Ascospores 7–8 × 4–5 µm. Pycnidia not seen. CHEMISTRY: cortex K+ yellow, UV-; medulla K-, C-, KC-, P-; containing usnic acid, constipatic acid (major), protoconstipatic acid (major), ±dehydroconstipatic acid (minor) and atranorin (minor).
  Rare, endemic, on rock in the Flinders Ra. and on Kangaroo Is., S.A.  
  Elix (1994z)  

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

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