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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 fumosa (Ach.) Müll.Arg.

Mém. Soc. Phys. Genève 29(8): 7 (1887)

Thelotrema fumosum Ach., Kongl. Vetensk. Acad. Nya Handl. 33: 91 (1812).

T: Sierra Leone, A.Afzelius s.n.; holo: H-ACH 747.

Ocellularia xantholeuca Müll.Arg., Hedwigia 30: 51 (1891). T: Bellenden Ker, Qld, 1889, F.M.Bailey 533; iso: BRI (AQ721234).

Ocellularia rimosa Hale, Smithsonian Contr. Bot. 16: 27 (1974). T: Dominica, M.E.Hale 37978; holo: US.

  Thallus endophloeodal to epiphloeodal, to c. 200 µm thick, pale greenish grey to olive or brownish, dull to slightly glossy, smooth, rarely continuous to usually ±verrucose, often distinctly rimose. True cortex discontinuous, to c. 20 µm thick, formed by irregular hyphae, in parts not conglutinated and forming a protocortex. Algal layer well developed, continuous; calcium oxalate crystals moderately large, scattered. Vegetative propagules not seen. Ascomata ±inconspicuous, to c. 0.8 mm diam., ±rounded to more often irregular, apothecioid when mature, solitary to marginally fused, immersed to rather emergent, then verrucose-hemispherical to urceolate. Disc with the columella visible from above, entire, free, slightly pruinose, dark grey. Pores formed by the thalline rim margin, to c. 0.4 mm diam., ±irregular, mostly split or eroded, then the apex of the proper exciple becoming visible from above as a brownish to dark grey line, moderately thick, concolorous with the thallus or brighter; thalline rim incurved. Proper exciple fused, moderately thin to moderately thick, pale to medium brown internally, dark brown to carbonised marginally and towards the tips, usually distinctly amyloid at the base. Hymenium to c. 150 µm thick, densely inspersed, distinctly conglutinated; paraphyses slightly bent, ±interwoven, unbranched, with moderately thickened tips; columellar structures moderately well developed, to 200 µm wide, entire, the upper parts brownish to carbonised, ±covered with greyish granules. Epihymenium brownish, with greyish or brownish granules. Asci 8-spored; tholus initially thick, thin when mature. Ascospores transversely septate, fusiform to oblong-fusiform, rarely clavate, with narrowly rounded to subacute ends, hyaline, distinctly amyloid, 25–40 × 7–10 µm, with 6–12 (–13) locules; locules ±rounded to slightly angular, ±lentiform, with hemispherical to conical end cells; septa moderately thick, regular; ascospore wall moderately thick, non-halonate; endospore moderately thick. Pycnidia not seen.
CHEMISTRY: Strain I: Thallus K–, C–, P–; no compounds detectable by TLC. Strain II: Thallus K+ orange, C–, P–; containing hirtifructic acid (major), conhirtifructic acid (major) acid, the main ‘cinchonarum unknown’ (major to trace), the ‘cinchonarum unknown’ accessory compound ‘spot 3’ (minor to trace).
  Occurs in monsoon forest and rainforest in northern N.T. and north-eastern Qld, at altitudes to 900 m; pantropical.  
  Mangold et al. (2009)  

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

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