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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 howeana A.W.Archer & Elix
  Telopea 6: 15 (1994)
T: Neds Beach Road at Malabar Hill Track, Lord Howe Is., 22 June 1992, J.A.Elix 32889; holo: CANB.
  Thallus off-white to dull yellowish green, areolate and cracked, smooth. Soredia and isidia absent. Apothecia numerous, conspicuous, verruciform, scattered, flattened-hemispherical, sometimes becoming constricted at the base and distorted, 0.8–1.5 (–2.0) mm diam. Ostioles inconspicuous, black or translucent, 1 (or 2) per verruca. Ascospores 8 per ascus, irregularly biseriate, ellipsoidal to subfusiform, (65–) 75–87 × 30–35 µm. CHEMISTRY: Thallus K–, KC+ yellow-orange, C+ yellow-orange, Pd–; containing arthothelin (major), 6-O-methylarthothelin (major), 2,5-dichloronorlichexanthone (minor), 2,7-dichloro-norlichexanthone (minor) and 4,5-dichloronorlichexanthone (trace).
  An uncommon, corticolous species in eastern N.S.W.; also in Lord Howe Is. and Papua New Guinea.  
  Archer (2004b)  

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

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