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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 streimannii A.W.Archer

Austral. Syst. Bot. 14: 265 (2001)

T: Rapid Creek, 9 km ENE of Darwin, N.T., on Xylocarpus, 20 July 1991, H.Streimann 48626; holo: CANB.

  Thallus ash-white, thin, smooth, dull. Ascomata conspicuous, black, sessile, scattered, straight or curved, rarely branched, 1–4 mm long, (0.15–) 0.25–0.50 mm wide, with a well-defined thalline margin; lips initially closed, opening to expose an epruinose or very lightly pruinose epihymenium. Proper exciple laterally carbonised. Hymenium 100–150 µm thick, inspersed. Ascospores 8 per ascus, irregularly biseriate, transversely (10–) 12 (–16)-locular, (35–) 45–60 (–70) × 6–8 (–10) µm, I+ blue-violet.
CHEMISTRY: Norstictic acid.
  A corticolous endemic in northern N.T. and eastern Qld; especially common in mangroves.  
  Archer (2009a)  

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

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