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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 clarkeana A.W.Archer
  Mycotaxon 53: 280 (1995)
Pertusaria confusa A.W.Archer, Mycotaxon 41: 224 (1991), nom. illeg., non P. confusa Zahlbr., Cat. Lich. Univ. 5: 134 (1928). T: Clarke Ra., 46 km SSW of Proserpine, Qld, 29 June 1986, H.Streimann 37465; holo: CANB; iso: B.
  Thallus off-white to pale yellowish white, wrinkled and cracked. Soredia and isidia absent. Apothecia numerous and crowded, disciform, adnate or rarely slightly stipitate, 0.5–1.5 mm diam.; disc rounded, somewhat sunken, plane, white-pruinose; margin concolorous with the thallus. Asci clavate, rarely fertile. Ascospores 1 per ascus, sublachrymoid to elongate-ellipsoidal, smooth, (100–) 135–150 (–175) × 30–55 µm; ascospore wall c. 1 µm thick. CHEMISTRY: Thallus K–, KC+ violet, C–, Pd–; containing lichexanthone (minor to major), with picrolichenic acid (minor) and subpicrolichenic acid (minor), or rarely with picrolichenic acid (minor), superpicrolichenic acid (minor) and hyperpicrolichenic acid (minor).
  An endemic, corticolous species in eastern Australia (Qld and N.S.W.); mainly in mangroves (Avicennia, Bruguiera and Rhizophora), but also on Acacia, Argyrodendron and Casuarina.  
  Archer (2004b)  

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

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