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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 norpumila Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 300 (1986). T: near abandoned Burnabbie Homestead, under scarp of Hampton Range [Tableland], Eyre, W.A., 22 May 1981, D.L.Serventy; holo: MEL.  
  Thallus foliose, adnate, to 3–10 cm wide. Lobes contiguous to imbricate, ±concave, sublinear, irregularly branched, not ascending, 0.7–1.5 mm wide; lobules subterete to terete, branched, ascending, often blackened at apices, 0.2–0.4 mm wide. Upper surface bright to pale yellow, often whitish-yellow pruinose at lobe apices, dull, emaculate, ±rugulose, lacking isidia and soredia. Medulla white. Lower surface canaliculate or not, black, becoming brown to yellow near apices of marginal lobes; rhizines sparse to moderately dense, simple, slender, 0.2–0.4 mm long, black. Apothecia rare, subpedicellate, to 3 mm wide; disc flat to slightly concave, dark brown; thalline exciple thick, prominent, crenulate becoming incised. Ascospores 10–11 × 5–6 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, P+ yellow-orange; containing usnic acid, norstictic acid and connorstictic acid.
  Very rare, endemic, on soil in the Nullarbor Region (W.A. and S.A.).  
  Elix (1994z)  

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

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