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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 confluens (Kremp.) Zahlbr.

Cat. Lich. Univ. 2: 587 (1923)

Ascidium confluens Kremp., Nuovo Giorn. Bot. Ital. 7: 23 (1875)

T: Borneo, [Malaysia], O.Beccari 201; holo: M.

Ascidium confluens Kremp. var. polyporum Kremp., Nuovo Giorn. Bot. Ital. 7: 23 (1875); Ocellularia confluens var. polypora (Kremp.) Zahlbr., Cat. Lich. Univ. 2: 587 (1923), as var. polycarpa. T: Borneo, [Malaysia], O.Beccari 128; holo: M.

Leptotrema nitidulum Müll.Arg., Bull. Herb. Boissier 3: 315 (1895). T: Qld, locality unknown, 1887, C.Knight 22; holo: G.

Thelotrema marivelense Vain., Ann. Acad. Sci. Fenn., ser. A, 15(6): 176 (1921); Leptotrema marivelense (Vain.) Zahlbr., Cat. Lich. Univ. 2: 637 (1923); Ocellularia marivelensis (Vain.) Hale, Mycotaxon 11: 137 (1980). T: Mt Mariveles, Bataan, Philippines, H.N.Whitford 1088; iso: US.

Leptotrema bahianum var. asiaticum Zahlbr., Feddes Rep. Spec. Regni Veg. 33: 25 (1933). T: Rengechi, Formosa [Taiwan], Y.Asahina 229; iso: US.

Thelotrema formosanum Zahlbr., Feddes Rep. Spec. Regni Veg. 33: 24 (1933). T: Rengechi, Formosa [Taiwan], Y.Asahina 230 (as 330); iso: US.

  Thallus endophloeodal to epiphloeodal, to c. 300 µm thick, pale greenish to pale yellowish grey to olive, dull to glossy, smooth, verrucose to verruculose, rimose or not. True cortex continuous or discontinuous, to c. 35 µm thick, formed by periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals numerous, moderately large, scattered or clustered. Vegetative propagules not seen. Ascomata conspicuous, to c. 1.5 mm diam., ±rounded, apothecioid at maturity, usually solitary, rarely fused, slightly to distinctly emergent, hemispherical to urceolate, rarely subglobose. Disc with columella visible in mature ascomata, slightly to usually distinctly pruinose, off-white to brownish, free to fused, entire to distinctly reticulate. Pores formed by the thalline rim margin, small to gaping, to c. 1 mm diam., ±rounded to slightly irregular, entire, rarely split or evanescent, then the apex of the proper exciple becoming visible from above as a brownish line, ±thick, concolorous with the thallus or brighter; thalline rim incurved. Proper exciple fused, thick, brownish to distinctly carbonised, sometimes amyloid at the base. Hymenium to c. 150 µm thick, not inspersed, distinctly conglutinated; paraphyses ±bent, often curly above, ±interwoven, unbranched, with slightly thickened tips; columellar structures well-developed, to c. 700 µm wide, replacing large parts of the hymenium, entire to complex, carbonised, covered with greyish or brownish granules. Epihymenium ±brownish, with greyish or brownish granules. Asci 8-spored; tholus initially thick, thin when mature. Ascospores submuriform to muriform, oblong to usually ellipsoidal, with ±rounded to narrowly rounded ends, initially hyaline, becoming brownish (sometimes rather late), distinctly amyloid, 10–30 × 7–15 µm, with 4–8 (–10) × 1–5 (–6) locules; locules ±rounded to slightly angular, subglobose to oblong or ±irregular; transverse septa distinct, moderately thin to thick; ascospore wall thick, with a thin halo; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish, C–, P+ yellow; containing psoromic acid (major), 2’-O-demethylpsoromic acid (minor to trace), subpsoromic acid (trace).
  A common, corticolous species in rainforest and mangroves in eastern Qld, at altitudes to 920 m; Palaeotropical.  
  Mangold et al. (2009)  

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

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