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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 dissita Elix & A.W.Archer
  in J.A.Elix, W.M.Malcolm & A.W.Archer, Mycotaxon 53: 273 (1995)
T: Mt McLachlan, 7 km NW of Pine Creek, N.T., 13°47’S, 131°47’E, 20 July 1991, J.A.Elix 28213; holo: CANB.
  Thallus dull yellowish green to pale olive-green, areolate and cracked, subtuberculate and dull. Soredia and isidia absent. Apothecia conspicuous, verruciform, scattered, rarely confluent, flattened-hemispherical, concolorous with the thallus, usually constricted at the base, 0.8–1.5 mm diam. Ostioles inconspicuous, black, punctiform, surrounded by a pale yellow opaque zone, c. 0.2 mm diam, 1 or 2 per verruca. Ascospores 8 per ascus, irregularly biseriate, ellipsoidal, smooth, (60–) 70–90 (–105) × 30–40 (–45) µm. CHEMISTRY: Thallus K–, KC+ orange, C+ orange, Pd–; containing stictic acid (major), thiophaninic acid (major), 2-chloro-6-O-methylnorlichexanthone (minor), lichexanthone (trace to minor), constictic acid (minor), hypostictic acid (minor), 4-chloro-6-O-methylnor-lichexanthone (trace), cryptostictic acid (trace), hypoconstictic acid (trace) and menegazziaic acid (trace).
  A rare, endemic, saxicolous species known from two localities in northern N.T.  
  Archer (2004b)  

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

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