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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 knightiana Müll.Arg.
  Bull. Soc. Roy. Bot. Belg. 31: 31 (1892)
T: New Zealand, s. loc., 1882, C.Knight 25; holo: G. ***Pertusaria whinrayi A.W.Archer, Mycotaxon 45: 423 (1992), as whinrayii. T: c. 1.7 km ENE of the tip of Unicorn Point, Badger Is., Furneaux Group, Bass Strait, Tas., 10 Oct. 1975, J.S.Whinray s.n.; holo: MEL.
  Thallus fawn to pale brown, thick, areolate and cracked, smooth and dull. Soredia and isidia absent. Apothecia sparse, verruciform, usually confluent, subhemispherical to flattened-hemispherical, concolorous with the thallus, constricted at the base, 0.8–2.0 mm diam. Ostioles black, conspicuous, noticeably sunken, 0.10–0.15 mm diam., 1 or 2 per verruca. Ascospores 2 per ascus, ellipsoidal, rough, 140–200 × 40–50 µm. CHEMISTRY: Thallus K+ yellow → red, KC–, C–, Pd+ yellow; containing norstictic acid (major), 4,5-dichlorolichexanthone (major to minor) and connorstictic acid (trace).
  This very rare, saxicolous species is known from Badger Is., Bass Strait, Tas.; also in New Zealand.  
  Archer (2004b)  

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

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