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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
Pseudocyphellaria sayeri D.J.Galloway
  Lichenologist 29: 600 (1997); Stictina fragillima var. linearis Müll.Arg., Flora 71: 23 (1888); Sticta fragillima f. linearis (Müll.Arg.) Zahlbr., Cat. Lich. Univ. 3: 382 (1925). T: Mt Bellenden Ker, Qld, 1887, W.A.Sayer; holo: G; iso: G 001994, MEL.  
  Thallus rosette-forming to irregularly spreading, loosely attached centrally, 2–5 (–10) cm wide. Lobes very narrow, 0.5–1.5 (–2.5) cm long, 0.5–1.5 mm wide at apices, to 3 mm wide centrally, repeatedly dichotomously or trichotomously branching, very fragile and brittle when dry; apices only free and divergent, centrally complex-entangled and forming a dense tangled mat; lobe margins entire, not thickened above or below. Upper surface pale grey or olivaceous when dry, dark blue-green or blue-black when wet, plane to subcanaliculate to irregularly punctate-impressed, smooth, matt or glossy; without isidia, maculae, phyllidia, pseudocyphellae or soredia. Medulla white. Photobiont Nostoc. Lower surface pale cream at margins, red-brown centrally, entirely glabrous, rarely with a very thin and patchy tomentum centrally, Pseudocyphellae rather widely scattered, minute, fleck-like, plane, white. Apothecia not seen. CHEMISTRY: 7β-acetoxyhopane-22-ol, hopane-7β, 22-diol (trace) and hopane-15α, 22-diol.
  A rare Australian endemic known only from north-eastern Qld; grows on bark at an altitude of c. 1200 m.  
  Galloway et al. (2001)  

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

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