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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 modesta Müll.Arg.
  Flora 67: 352 (1884)
T: Caracas, Venezuela, 1879, Ernst s.n.; holo: G.
  Thallus pale olive-green, areolate and cracked, smooth and dull. Soredia and isidia absent. Apothecia numerous, conspicuous, verruciform, concolorous with the thallus, crowded, sometimes confluent, flattened-hemispherical, usually concave above, 0.4–1.0 mm diam. Ostioles black, conspicuous, 1–2 (–5) per verruca. Ascospores 4 per ascus, ellipsoidal, smooth, 90–115 (–135) × 30–45 (–50) µm. CHEMISTRY: Thallus K–, KC–, C–, Pd–; containing 2-O-methylsuperlatolic acid (major), lichexanthone (minor to major), 2-chlorolichexanthone (minor to major), 2-O-methyl-hyperlatolic acid (minor to major), 2-O-methylperlatolic acid (minor), perlatolic acid (trace) and stenosporic acid (trace).
  A very rare, corticolous species in northern N.T.; also in Brazil, Venezuela, Cuba and Papua New Guinea.  
  Archer (2004b)  

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

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