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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
Graphis caesiella Vain.

Acta Soc. Fauna Fl. Fenn. 7: 122 (1890)

T: Brazil, E.A.Vainio s.n.;holo: TUR-V 27730 n.v.

Graphis kakaduensis A.W.Archer, Austral. Syst. Bot. 14: 264 (2001). T: Mangarree Nature Walk, 27 km NE of Jabiru, Kakadu Natl Park, N.T., 25 May 1988, J.A.Elix 22579; holo: CANB.

  Thallus pale greyish white, thin, smooth, somewhat glossy. Ascomata inconspicuous, scattered, thin, immersed to semi-immersed, black, with a thin thalline veil or white pruina over the exposed proper exciple, straight or curved, rarely branched, 2–5 (–6) mm long, 0.20–0.25 mm wide; thalline margin conspicuous; lips usually closed, rarely becoming slightly open to expose a weakly white-pruinose disc. Proper exciple usually laterally carbonised, sometimes almost completely carbonised. Hymenium 75–100 (–125) µm thick, not inspersed. Ascospores 8 per ascus, irregularly uniseriate, transversely 8–10 (–11)-locular, 25–35 × 6–8 µm, I+ blue.
CHEMISTRY: Norstictic acid.
  Corticolous in northern N.T. and north-eastern Qld; also in Brazil, Costa Rica, the Seychelles, Lord Howe Island, Norfolk Island and Vanuatu.  
  Archer (2009a)  

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

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