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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 domingensis (Fée) Müll.Arg.

Flora 70: 398 (1887)

Ascidium domingense Fée, Acta Soc. Sci. Fenn. 7: 455 (1863); — Thelotrema domingense (Fée) Tuck., Syn. N. Amer. Lich. 1: 225 (1882).

T: Nova Granata [Colombia], 1860, A.Lindig 2683; isoneo: BM, UPS, fide M.E.Hale, Smithsonian Contr. Bot. 38: 20 (1978)

  Thallus endophloeodal to epiphloeodal, to c. 400 µm thick, greenish to yellowish grey or pale olive, ±glossy, smooth, continuous to ±verrucose, ±rimose; verrucae near ascomata often eroded, exposing the white medulla. True cortex ±continuous, to c. 20 µm thick, formed by irregular to periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals moderately large to large, clustered. Vegetative propagules not seen. Ascomata ±conspicuous, to c. 1.2 mm diam., ±rounded to irregular, perithecioid to indistinctly apothecioid, solitary to marginally fused, emergent at maturity, often ±irregular and verrucose, typically depressed-cylindrical, rarely subglobose. Disc not visible from above, in older stages the pores filled by the columella tip, free, often overlaying the thalline rim, slightly pruinose, off-white to greyish. Proper exciple not visible from above; thalline rim margin to 0.2 mm diam., ±rounded, entire, moderately thick, often sunken, concolorous with the thallus or brighter; thalline rim incurved. Proper exciple fused, moderately thin to thick in upper parts, yellowish brown to brownish internally and at the base, dark brown to distinctly carbonised marginally and distally, distinctly prosoplectenchymatous, occasionally amyloid at the base. Hymenium to c. 300 µm thick, not inspersed, moderately conglutinated; paraphyses ±bent to distinctly curly towards the tips, parallel to slightly interwoven, unbranched, with slightly thickened tips; columellar structures often poorly developed and thin, to 200 µm wide, entire, ±conical, dark brown to distinctly carbonised, covered with a thin to ±thick layer of greyish or brownish granules. Epihymenium indistinct, occasionally with greyish to brownish granules. Asci 1 (–2)-spored; tholus not apparent, with initially thick lateral walls, these becoming thin. Ascospores transversely septate, oblong-fusiform, with acute thickly halonate ends, hyaline to yellowish or pale brownish with age, distinctly amyloid, 120–220 × 20–40 µm, with 28–38 locules; locules ±rounded to ±angular, oblong to lentiform, with oblong to hemispherical end cells; septa thin, regular; ascospore wall and endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K–, C–, P–; containing hypoprotocetraric acid (major to minor), 4-O-demethylnotatic acid (major to minor).
  Corticolous in rainforest and wet-sclerophyll forest in eastern Qld and north-eastern N.S.W., at altitudes 1200 m. Previously known from the Neotropics.  
  Mangold et al. (2009)  

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

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