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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 phaeotropa (Kremp.) Zahlbr.

Cat. Lich. Univ. 2: 598 (1923)

Ascidium phaeotropum Kremp., Nuovo Giorn. Bot. Ital. 7: 22 (1875).

T: Sarawak, [Malaysia], O.Beccari 153; holo: M.

Ocellularia diffractella Müll.Arg., Hedwigia 30: 50 (1891). T: Bellenden Ker, Qld, F.M.Bailey 556; iso: BRI, NSW, NY.

Ocellularia goniostoma Müll.Arg., Hedwigia 30: 51 (1891). T: Bellenden Ker, Qld, F.M.Bailey 545; holo: G; iso: BRI (AQ721233).

  Thallus endophloeodal to epiphloeodal, to c. 200 (–300) µm thick, pale greenish grey to olive or brownish, ±glossy, smooth, continuous to verrucose or verruculose, rimose or not; verrucae near ascomata often eroded, exposing white medullary tissue. True cortex continuous, to c. 50 µm thick, formed by irregular hyphae. Algal layer well developed, continuous; calcium oxalate crystals small to moderately large, scattered or clustered. Ascomata ±conspicuous, to c. 1.5 mm diam., ±rounded to irregular, apothecioid at maturity, solitary or marginally fused, ±emergent, often verrucose, hemispherical to urceolate, rarely subglobose. Disc with the columella occasionally visible in mature ascomata, epruinose to slightly pruinose, grey, free, entire. Pores formed by the thalline rim margin, to 0.5 mm diam., ±rounded to irregular, moderately thin to thick, entire to split, evanescent with age and brownish to dark grey due to the protuberant proper exciple, otherwise concolorous with the thallus; thalline rim incurved. Proper exciple fused, moderately thin to thick, yellowish to reddish brown or brownish internally, dark brown to carbonised marginally and above, often amyloid at the base. Hymenium to c. 150 µm thick, not inspersed, conglutinated; paraphyses straight to slightly bent and interwoven, unbranched, with slightly thickened tips; columellar structures well developed at maturity, to 600 µm wide, entire, brownish to carbonised, with or without a thin layer of greyish granules. Epihymenium hyaline, occasionally with greyish or brownish granules. Asci 8-spored; tholus initially thick, thin when mature. Ascospores transversely septate, oblong to fusiform or ellipsoidal, with ±rounded to narrowly rounded ends, rarely subacute, hyaline, amyloid, 15–35 (–40) × 6–8 (–9) µm, with 6–10 locules; locules initially ±rounded to slightly angular, later ±lentiform to oblong or rectangular, with hemispherical to conical end cells; septa moderately thick, regular; ascospore wall and endospore moderately thick; wall non-halonate. Pycnidia not seen.
CHEMISTRY: Thallus K–, C–, P–; containing convirensic acid (major), hypoprotocetraric acid (major), 4-O-demethylnotatic acid (minor to trace).
  Rare on bark in montane rainforest in north-eastern Qld; also in Malaysia.  
  Mangold et al. (2009)  

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

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