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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 asiatica (Vain.) Hale

Mycotaxon 11: 136 (1980)

Thelotrema asiaticum Vain., Hedwigia 46: 175 (1907).

T: Koh Chang Island, Thailand, J.Schmidt 40; holo: TUR-V.

Thelotrema polillense Vain., Ann. Acad. Sci. Fenn., ser. A, 15(6): 180 (1921); Ocellularia polillensis (Vain.) Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 320 (1981); Stegobolus polillensis (Vain.) Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 476 (2006). T: Polillo Island, Philippines, Robinson 9098; holo: TUR-V.

Thelotrema stramineum Vain., Ann. Acad. Sci. Fenn., ser. A, 15(6): 181 (1921); Ocellularia straminea (Vain.) Hale, Mycotaxon 11: 137 (1980). T: Bataan, Luzon, Philippines, H.N.Whitford 1086; iso: NY, US.

  Thallus endophloeodal to epiphloeodal, to c. 400 µm thick, greyish to pale greenish or yellowish grey to olive, dull to glossy, smooth, verruculose to verrucose, rimose or not. True cortex continuous or discontinuous, to c. 30 µm thick, formed by periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals abundant, moderately large to large, scattered or clustered. Vegetative propagules not seen. Ascomata ±conspicuous, to c. 1.4 mm diam., ±rounded, apothecioid at maturity, solitary to marginally fused, slightly to distinctly emergent, hemispherical to urceolate, rarely subglobose. Disc with the columella visible in mature ascomata, ±distinctly pruinose, off-white to brownish, free to fused, entire or strongly reticulate. Proper exciple not visible from above; thalline rim margin small to gaping, to c. 1 mm diam., ±rounded to slightly irregular, entire, rarely split, concolorous with the thallus, sometimes brownish; thalline rim incurved. Proper exciple fused, thick, brownish to distinctly carbonised, usually amyloid at the base. Hymenium to c. 120 µm thick, not inspersed, strongly conglutinated; paraphyses ±bent, ±interwoven, unbranched, with slightly thickened tips; columellar structures well-developed, to c. 800 µm wide, replacing large parts of the hymenium, entire to distinctly complex, carbonised, covered with greyish or brownish granules. Epihymenium ±brownish, with greyish or brownish granules. Asci 8-spored; tholus initially thick, becoming rather thin. Ascospores transversely septate to submuriform, mostly fusiform, rarely ellipsoidal or clavate, with narrowly rounded to subacute ends, hyaline, occasionally becoming pale brownish, distinctly amyloid, 10–30 × 7–10 µm, with 4–9 (–10) × 1–2 (–3) locules; locules ±rounded to slightly angular, mostly lentiform, rarely oblong or ±irregular; transverse septa thick, regular; ascospore wall thick, with a thin halo; endospore thick. Pycnidia immersed, with a darkened pore area. Conidia fusiform, to 5 × 1 µm.
CHEMISTRY: Chemistry: Thallus K+ yellowish, C–, P+ yellow; containing psoromic acid (major), 2’-O-demethylpsoromic acid (minor to trace), subpsoromic acid (trace).
  Common on bark in rainforest in eastern Qld and north-eastern N.S.W.; occurs from sea level to 1200 m. Palaeotropical and subtropical.  
  Mangold et al. (2009)  

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

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