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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
Ocellularia wirthii Mangold, Elix & Lumbsch

Sauteria 15: 364 (2008)

T: track from summit to carpark, Mount Warning Natl Park, N.S.W., 28°23’S, 153°16’E, alt. 850 m, on bark in temperate rainforest, 7 Mar. 2005, A.Mangold 19z; holo: NSW; iso: CANB.

  Thallus endophloeodal to epiphloeodal, to c. 300 µm thick, pale greenish grey to pale yellowish grey, dull to slightly glossy, smooth, verrucose to verruculose, rarely continuous, ±distinctly rimose. True cortex continuous, to c. 25 µm thick, formed by periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals small and clustered, usually abundant near ascomata. Vegetative propagules not seen. Ascomata conspicuous, to c. 0.5 mm diam., ±rounded to irregular, initially perithecioid, becoming apothecioid, solitary to marginally fused, slightly to moderately emergent, irregular-verrucose or urceolate. Disc of mature ascomata with the columella visible from above, epruinose to slightly pruinose, dark grey, free, entire. Pores formed by the thalline rim margin, to c. 0.2 mm diam., ±rounded to slightly irregular, moderately thick, entire, soon becoming evanescent and brownish to dark grey due to the protuberant proper exciple, often with a brighter pruinose zone towards the pore forming a distinct ring, otherwise concolorous with the thallus; thalline rim incurved. Proper exciple fused, thin and yellowish or brownish basally to thick and dark brown to carbonised distally, non-amyloid. Hymenium to c. 120 µm thick, not inspersed, conglutinated; paraphyses straight to slightly bent and interwoven, unbranched, with slightly thickened tips; columellar structures well developed, to 200 µm wide, replacing much of the hymenium, entire, carbonised, with or without a thin covering of greyish or brownish granules. Epihymenium hyaline, occasionally with greyish granules. Asci 8-spored; tholus thick. Ascospores transversely septate, oblong to ellipsoidal, with ±rounded to narrowly ±rounded ends, hyaline, distinctly amyloid, 18–25 × 5–8 µm, with 5–7 (–8) locules; locules ±rounded, ±lentiform; end cells hemispherical; septa thick, regular; ascospore wall thin, non-halonate; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish, C–, P+ yellow; containing psoromic acid (major), 2’-O-demethylpsoromic acid (trace), subpsoromic acid (traces).
  A common, corticolous endemic in forest in eastern N.S.W., at altitudes of 40–1200 m.  
  Mangold et al. (2009)  

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

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