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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 plumosa Müll.Arg.
  Flora 65: 484 (1882. T: Toowoomba, Qld, 1881, C.H.Hartmann L.33; holo: G; iso: MEL.  
  Thallus thin, plane, continuous to verrucose or verruculose, yellowish brown to orange-grey, or greenish yellow, epruinose, sometimes glossy. Soredia absent. Prothallus whitish to whitish grey or not visible. Apothecia immersed when immature, becoming sessile, 0.4–0.7 mm diam.; disc wax-coloured or pale to greenish orange, not or very slightly pruinose; margin concolorous with the thallus, thin, entire, ±verrucose to verruculose. Cortex hyaline, ±gelatinous, inspersed with small crystals, 15–25 µm thick laterally and 20–25 µm thick basally. Amphithecium with large crystals insoluble in KOH (pulicaris-type). Parathecium hyaline, 10–15 µm thick, with numerous small crystals soluble in KOH. Epihymenium yellowish brown to pale brown, c. 10–15 µm thick, with numerous crystals (chlarotera-type); pigmentation rapidly dissolving in KOH. Hymenium, subhymenium and hypothecium hyaline. Paraphyses sparingly branched and not or slightly thickened apically. Ascospores ellipsoidal, 8.0–11.5 × 4.0–6.5 µm. CHEMISTRY: Thallus and apothecial margin K+ yellow, C–, Pd+ pale orange; containing atranorin (major), 2’-O-methylperlatolic acid (major), chloroatranorin (minor), 2’-O-methyl-isohyperlatolic acid (minor) and 2’-O-methylsuperlatolic acid (minor).
  A saxicolous species in north-western W.A., northern N.T., eastern Qld and N.S.W.; usually grows on shaded, siliceous rocks. Also in North and South America, South Africa, the North Island of New Zealand and Lord Howe Is.  
  Lumbsch & Elix (2004)  

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

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