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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 rigida Müll.Arg.
  J. Linn. Soc., Bot. 29: 221 (1893)
T: Manipoor [Manipur], India, G.Watt s.n., ex Herb. Kew 1891; holo: G.
  Thallus pale greyish olive, minutely areolate and cracked, smooth and dull. Soredia and isidia absent. Apothecia numerous, verruciform, sometimes confluent, concolorous with the thallus, flattened-hemispherical, 0.8–1.5 mm diam. Ostioles conspicuous, black, punctiform, sometimes in a pale grey translucent zone (and inconspicuous), 1 (rarely 2) per verruca, more numerous in confluent verrucae. Ascospores 4–6 (–8) per ascus, irregularly uni- or biseriate, ellipsoidal to subfusiform, smooth, (60–) 65–80 (–90) × 25–38 µm. CHEMISTRY: K–, KC–, C–, Pd–; containing 4,5-dichlorolichexanthone (major), ±4,5-dichloro-3-O-methylnorlichexanthone (trace) and ±4,5-dichloro-6-O-methylnorlichexanthone (trace).
  A predominantly inland, corticolous species in W.A., Qld and northern N.S.W.; also in India.  
  Archer (2004b)  

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

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