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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 ecolumellata Mangold

in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 655 (2009)

T: Forest Reserve 605, Dawson L.A., 23.7 km S of Koombooloomba turnoff, WSW of Tully, Qld, alt. 800 m, on bark in rainforest, 21 July 1983, M.E.Hale 832150; holo: US.

  Thallus epiphloeodal, to c. 600 µm thick, pale yellowish to greenish grey, rarely olive, ±glossy, smooth, ±verrucose or verruculose, rarely continuous, ±distinctly rimose. Protocortex discontinuous, or the thallus with a true cortex to c. 25 µm thick, consisting of irregular to periclinal hyphae. Algal layer moderately well developed, continuous; calcium oxalate crystals absent to sparse, small and clustered. Vegetative propagules not seen. Ascomata ±inconspicuous, to c. 0.6 mm diam., ±rounded to slightly irregular, perithecioid, solitary to marginally fused, immersed to partly emergent, then verrucose-urceolate. Disc not visible from above. Pores formed by the thalline rim margin, to c. 0.05 mm diam., ±rounded, entire, often evanescent, the apex of the proper exciple becoming visible from the above as a dark brown ring, moderately thick, concolorous with the thallus; thalline rim incurved. Proper exciple fused, moderately thick, pale brown internally to dark brown or ±distinctly carbonised marginally, non-amyloid. Hymenium to c. 90 µm thick, not inspersed, strongly conglutinated; paraphyses ±bent, parallel to slightly interwoven, unbranched, with moderately thickened slightly irregular tips; columellar structures absent. Epihymenium indistinct to hyaline or brownish and with sparse greyish or brownish granules. Asci 8-spored; tholus thick. Ascospores transversely septate, oblong to fusiform or clavate, with ±rounded to subacute ends, hyaline, distinctly amyloid, 15–25 × 6–8 µm, with 4–8 locules; locules ±rounded, oblong to lentiform, with hemispherical to conical end cells; septa moderately thick to thick, regular to slightly irregular; ascospore wall thick, thinly halonate; endospore thick. Pycnidia emergent, with a darkened pore area. Conidia bacilliform, to c. 5 × 1 µm.
CHEMISTRY: Thallus K+ yellowish becoming brown, C–, P+ orange; containing stictic acid (major), constictic acid (major), α-acetylhypoconstictic acid (minor to trace), α-acetylconstictic acid (trace), cryptostictic acid (trace), hyposalazinic acid (trace), hypostictic acid (trace).
  Corticolous in montane rainforest in north-eastern Qld, at altitudes of 600–1200 m; endemic.  
  Mangold et al. (2009)  

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

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