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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
Lecanora arafurensis Lumbsch & Elix
  Mycotaxon 67: 392 (1998). T: Stuart Hwy, 41 km NW of Pine Creek, N.T., 18 July 1991, H.T.Lumbsch 8829m, J.A.Elix & H.Streimann; holo: CANB.  
  Thallus verrucose to verruculose, bullate, yellowish white to whitish grey, epruinose, glossy. Soredia absent. Prothallus whitish grey. Apothecia sessile, 0.3–0.7 mm diam.; disc pale to dark grey-brown or greyish red-brown, epruinose; margin concolorous with the thallus, entire, verrucose. Cortex hyaline, opaque, inspersed with numerous small crystals, 20–35 µm thick laterally and basally. Amphithecium with large and small crystals; small crystals soluble in KOH (melacarpella-type). Parathecium hyaline, with small crystals, 10–15 µm thick. Epihymenium red-brown to grey-brown, c. 10–15 µm thick, with crystals (pulicaris-type); crystals and pigmentation soluble in KOH. Hymenium, subhymenium and hypothecium hyaline. Paraphyses sparingly branched and not thickened apically. Ascospores ellipsoidal to broadly ellipsoidal, 7.5–11.0 × 4.5–7.0 µm. CHEMISTRY: Thallus and apothecial margin K+ yellow, C–, Pd+ yellow; containing atranorin (major), chloroatranorin (major), stenosporonic acid (major), thiophanic acid (major), constipatic acid (minor), dehydroconstipatic acid (minor) and an unknown fatty acid (minor).
  An endemic species in northern W.A. and N.T., L. arafurensis occurs on south-facing sandstone at elevations of 100–200 m in open Eucalyptus woodland.  
  Lumbsch & Elix (2004)  

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

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