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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 gibberulosa (Müll.Arg.) Mangold

in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 656 (2009)

Thelotrema gibberulosum Müll.Arg., Flora 64: 526 (1881).

T: São Paulo, Brazil, J.I.Puiggari 1514; holo: G.

Thelotrema minarum Vain., Étud. Class. Lich. Brésil 2: 79 (1890). T: Minas Gerais, Brazil, 1885, E.A.Vainio (Lich. Bras. Exs. 1397);holo: TUR-V 26835.

  Thallus endophloeodal to epiphloeodal, to c. 300 µm thick, yellowish grey, ±glossy, smooth, strongly verrucose to verruculose, ±distinctly rimose to areolate. True cortex continuous or discontinuous, to c. 20 µm thick, formed by periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals moderately large and clustered. Vegetative propagules not seen. Ascomata conspicuous, to c. 1.2 mm diam., ±rounded to ±irregular, perithecioid to indistinctly apothecioid, solitary, emergent, verrucose-hemispherical to urceolate. Disc and proper exciple not visible from above. Thalline rim margin to 0.3 mm diam., ±rounded to slightly irregular, entire, moderately thick, often funnel-shaped and/or ±distinctly annulate, concolorous with the thallus; thalline rim incurved. Proper exciple fused, moderately thick to very thick in the upper part, brownish to reddish brown internally and at the base, dark brown to carbonised above, prosoplectenchymatous, non-amyloid. Hymenium to c. 300 µm thick, not inspersed, distinctly conglutinated; paraphyses straight to bent, parallel to slightly interwoven, unbranched to sparingly branched towards the margins, with slightly thickened tips; columellar structures absent. Epihymenium indistinct. Asci 2–4-spored; tholus initially rather thick, absent when mature. Ascospores muriform, oblong-ellipsoidal, with ±rounded to narrowly rounded ends, hyaline, rarely yellowish or pale brown (post-mature), strongly amyloid, 80–220 × 20–40 µm, with numerous locules; locules ±rounded to angular, subglobose to irregular, subdivided by several thicker distinct regular transverse septa, otherwise transverse septa indistinct and irregular; ascospore wall thin to thick, non-halonate; endospore moderately thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish, C–, P+ yellow; containing psoromic acid (major), 2’-O-demethylpsoromic acid (trace), subpsoromic acid (trace).
  Known from barkin a “mixed deciduous forest along creek, with remnants of mangrove” near Sydney, N.S.W.; also in Brazil.  
  Mangold et al. (2009)  

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

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