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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 subcoarctata (C.Knight) Hertel
  Beih. Nova Hedwigia 79: 448 (1984); Lecidea subcoarctata C.Knight, Trans. Proc. New Zealand Inst. 8: 316 (1876). T: [probably Wellington] New Zealand, C.Knight; lecto: BM, fide D.J.Galloway, Fl. New Zealand Lichens 238 (1985).  
  Thallus rimose-areolate to verrucose or continuous, greyish white to cream-coloured, epruinose. Soredia absent. Prothallus black. Apothecia sessile, 0.4–1.2 mm diam.; disc blackish brown, slightly greyish-pruinose; margin blackish brown, thin, entire, distinct at first, later becoming excluded. Cortex and algal cells absent. Excipulum with a hyaline inner part and a grey-green outer part. Epihymenium dark green to olivaceous, c. 8–12 µm thick, lacking crystals. Hymenium and subhymenium hyaline. Hypothecium hyaline or yellowish to pale olivaceous brown. Paraphyses sparingly branched and capitate apically. Ascospores broadly ellipsoidal, 8.5–13.0 × 5.0–9.0 µm. CHEMISTRY: Thallus K+ yellow, C+ orange, Pd+ pale orange; containing arthothelin (major), atranorin (major), zeorin (major), chloroatranorin (minor) and 4,5-dichloronorlichexanthone (minor).
  Occurs on siliceous rocks in coastal habitats in Tas. Also in South America, Norfolk Is. and New Zealand.  
  Lumbsch & Elix (2004)  

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

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