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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 melanommata C.Knight
  in F.M.Bailey, Syn. Queensland Fl. Suppl. 1: 71 (1886). T: Mt Perry, Qld, J.Keys 549; holo: WELT; iso: BRI.  
  Thallus thick, somewhat bullate, verrucose to verruculose, yellowish white to whitish grey, epruinose, slightly glossy. Soredia absent. Prothallus not visible. Apothecia immersed when immature, subsequently remaining immersed or becoming slightly sessile, 0.2–0.8 mm diam.; disc pale to dark red-brown, epruinose; margin concolorous with the thallus, thin to thick, entire, ±verrucose to verruculose. Cortex hyaline, 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 reddish brown, K–, without crystals (glabrata-type), c. 10–15 µm thick. Hymenium, subhymenium and hypothecium hyaline. Paraphyses sparingly branched and not thickened to slightly thickened apically. Asci clavate; no mature ascospores seen. CHEMISTRY: Thallus and apothecial margin K+ yellow, C–, Pd+ yellowish orange; containing atranorin (major), chloroatranorin (minor) and zeorin (minor).
  A rare, endemic, corticolous species in W.A., south-eastern Qld and eastern N.S.W.  
  Lumbsch & Elix (2004)  

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

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