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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 demersa (Kremp.) Hertel & Rambold
  in G.Rambold, Biblioth. Lichenol. 34: 90 (1989); Lecidea demersa Kremp., Verh. K.K. Zool.-Bot. Ges. Wien, B, 26: 455 (1876); Diomedella demersa (Kremp.) Hertel, Beih. Nova Hedwigia 79: 445 (1984). T: New Zealand, C.Knight; holo: M.  
  Thallus rimose to areolate, greyish white to white, smooth to rough, epruinose. Soredia absent. Prothallus blackish brown. Apothecia immersed to subimmersed, 0.7–1.5 mm diam.; disc black, epruinose; margin black, at first distinct, becoming thin or excluded. Cortex absent. Excipulum hyaline, 20–100 µm thick; outer zone green-black, without crystals. Epihymenium green to green-black, without crystals, c. 10–15 µm thick. Hymenium, subhymenium and hypothecium hyaline. Paraphyses branched and thickened apically. Ascospores ellipsoidal, 9.0–12.0 × 6.0–7.0 µm. CHEMISTRY: Thallus K+ yellow, C–, Pd+ pale orange; containing atranorin and an unidentified fatty acid.
  This species occurs on siliceous rocks at subalpine elevations in south-eastern N.S.W. and the A.C.T. Also known from New Zealand.  
  Lumbsch & Elix (2004)  

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

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