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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
Pertusaria ewersii A.W.Archer & Elix
  in A.W.Archer, Biblioth. Lichenol. 69: 65 (1997)
T: Davies Creek Natl Park, Qld, 16°58’S, 145°33’E, 30 Sept. 1991, W.H.Ewers 8651; holo: CANB.
  Thallus thin, pale fawn, cracked, smooth and dull. Soredia and isidia absent. Apothecia verruciform, scattered, rarely confluent, concolorous with the thallus, flattened-hemispherical, 0.5–0.8 mm diam. Ostioles conspicuous, black, 1 per verruca. Ascospores (3 or) 4 per ascus, ellipsoidal, smooth, 64–75 × 25–32 µm. CHEMISTRY: Thallus K–, KC–, C–, Pd–; containing 2,4,5-trichlorolichexanthone (major),
2,5-dichlorolichexanthone (major), 2-chlorolichexanthone (major), stictic acid (major), confluentic acid (minor), constictic acid (minor), 2’-O-methylmicrophyllinic acid (trace) and microphyllinic acid (trace).
  A endemic, corticolous species that is known only from the type locality in north-eastern Qld.  
  Archer (2004b)  

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

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