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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 austrointumescens Lumbsch & Elix
  Mycotaxon 67: 393 (1998). T: track to Hayward Peak, 22 km ESE of Mt Barker, Porongorup Ra., Porongorup Natl Park, W.A., 16 Sept. 1994, H.T.Lumbsch 10832a, J.A.Elix & H.Streimann; holo: CANB; iso: Herb. H.T.Lumbsch.  
  Thallus verruculose to verrucose, thin, yellowish white to yellowish grey, epruinose. Soredia absent. Prothallus not visible or whitish grey. Apothecia sessile, 0.5–1.0 mm diam.; disc pale red-brown to orange-brown, epruinose to slightly grey-pruinose; margin concolorous with the thallus, entire, ±verrucose, flexuose, sorediate or not. Cortex hyaline, inspersed with numerous small crystals, 15–25 µm thick laterally and 20–30 µm thick basally, disappearing when sorediate. Amphithecium with large and small crystals (melacarpella-type). Parathecium hyaline, without crystals, 10–15 µm thick. Epihymenium reddish brown, with small crystals soluble in KOH (chlarotera-type), c. 10–15 µm thick. Hymenium hyaline, inspersed with small oil droplets. Hypothecium and subhymenium hyaline. Paraphyses sparingly branched and thickened apically. Ascospores ellipsoidal, 9.5–12.0 × 5.0–7.0 µm. CHEMISTRY: Thallus and apothecial margin K+ yellow, C–, Pd+ pale orange; containing usnic acid (major) and atranorin (minor).
  Known only from south-western W.A. where it occurs on bark of Acacia and Agonis in dry-sclerophyll forest.  
  Lumbsch & Elix (2004)  

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

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