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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 amplior (Nyl.) Redinger

Ark. Bot. 28A(8): 16 (1936)

Thelotrema cavatum var. amplius Nyl., Ann. Sci. Nat., Bot., sér. 5, 7: 316 (1867); — Ocellularia cavata var. amplior (Nyl.) Zahlbr., Cat. Lich. Univ. 2: 585 (1923); — Ampliotrema amplius (Nyl.) Kalb, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 81 (2006).

T: Pie de Cuesta, Nova Granata [Colombia], A.Lindig 99; holo: H-NYL 22831.

  Thallus endophloeodal to epiphloeodal, to c. 300 µm thick, yellowish or brownish olive, usually glossy, smooth, continuous to slightly verruculose, rimose or not, covered by a usually continuous protocortex or a true cortex to c. 20 µm thick, consisting of 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. 1.5 mm diam., ±rounded, apothecioid, solitary to fused, usually strongly emergent to sessile, subglobose to urceolate. Disc partly visible from above, greyish, pruinose. Pores formed by thalline rim margin, large, rarely gaping, to c. 0.8 mm diam., ±rounded, entire to eroded, then the apical proper exciple becoming visible from above as a darkish grey line, moderately thin to thick, concolorous with the thallus or brighter; thalline rim incurved. Proper exciple fused, moderately thin to thick, distinctly carbonised to orange or yellowish brown marginally, amyloid at the base. Hymenium to c. 160 µm thick, inspersed, moderately conglutinated; paraphyses straight to slightly bent, parallel to slightly interwoven, unbranched, with unthickened to moderately thickened tips; columellar structures absent. Epihymenium hyaline, with greyish granules. Asci 8-spored; tholus thin to thick at maturity. Ascospores transversely septate, oblong to ellipsoidal, with ±rounded to narrowly rounded ends, hyaline, strongly amyloid, 20–35 × 6–9 µm, with 5–8 locules; locules ±rounded, oblong to lentiform, with hemispherical end cells; transverse septa moderately thick, regular; ascospore wall thin to thick, non-halonate; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish brown, C–, P+ orange-red; containing protocetraric acid (major), virensic acid (minor to trace), barbatic acid (minor to trace).
  Rare on bark in lowland rainforest in north-eastern Qld. Also 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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