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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 thelotremoides (Leight.) Zahlbr.

Cat. Lich. Univ. 2: 603 (1923)

Ascidium thelotremoides Leight., Trans. Linn. Soc. London 27: 170 (1869).

T: Central Province, Ceylon [Sri Lanka], G.H.K.Thwaites 142; lecto: BM, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 325 (1981); isolecto: H-NYL3920.

Thelotrema albidopallens Nyl., Bull. Soc. Linn. Normandie, sér. 2, 7: 168 (1873). T: Andaman Islands, S.Kurz 98; holo: H-NYL22594.

Thelotrema australiense Müll.Arg., Flora 70: 61 (1887). T: Richmond River, N.S.W., Miss Hodgkinson s.n.; holo: M.

Ocellularia psathyroloma Müll.Arg., Hedwigia 30: 183 (1891). T: Tu-Phap, Tonkin, [Vietnam], B.Balansa s.n.; holo: G.

Thelotrema microphthalmum Müll.Arg., Bull. Herb. Boissier 3: 314 (1895). T: Qld, locality unknown, F.M.Bailey 773; holo: G; iso: BRI.

Thelotrema secernendum Harm., Bull. Soc. Sci. Nancy 13: 40 (1912). T: New Caledonia or Australia, R.P.Pionnier 37; iso: DUKE, S.

Thelotrema leucocheilum Vain., Ann. Acad. Sci. Fenn., ser. A, 15(6): 182 (1921). T: Luzon, Philippines, A.D.E.Elmer 14907; iso: US.

Thelotrema subsimile Hale, Phytologia 27: 497 (1974); Ocellularia subsimilis (Hale) Hale, Mycotaxon 11: 138 (1980). T: Trinidad, M.E.Hale 37447; holo: US.

Myriotrema viride Nagarkar & Hale, Mycotaxon 35: 440 (1989). T: Genting Highlands, Selangor, Malaya [Malaysia], alt. 1800 m, 16 Aug. 1983, M.E.Hale 63111; holo: US.

  Thallus endophloeodal to epiphloeodal, to c. 500 µm thick, pale greenish grey to yellowish grey or olive, dull to glossy, smooth, continuous to verrucose, non-rimose. True cortex discontinuous, to c. 50 µm thick, consisting of irregular hyphae. Algal layer well developed, continuous; calcium oxalate crystals ±small and scattered. Vegetative propagules not seen. Ascomata conspicuous in older stages, to c. 0.6 mm diam., ±rounded to irregular, apothecioid at maturity, solitary to fused, immersed to moderately emergent, rarely strongly emergent, often verrucose, hemispherical to urceolate. Disc with the columella visible in mature ascomata, epruinose to ±pruinose, off-white to brownish or dark grey, free or fused with the thalline rim, entire. Pores formed by the thalline rim margin, to c. 0.3 mm diam., ±rounded to irregular, moderately thin to thick, entire to slightly split or evanescent and brownish due to the protuberant proper exciple, otherwise concolorous with the thallus or brighter; thalline rim incurved. Proper exciple fused, moderately thin to thick, yellowish brown to brownish internally, dark brown or, rarely, carbonised marginally and above, often amyloid at the base. Hymenium to c. 180 µm thick, not inspersed, conglutinated; paraphyses straight to slightly bent and interwoven, unbranched, with slightly thickened tips; columellar structures ±well developed in older stages, to 200 µm wide, entire, brownish to carbonised, with or without a ±thick layer of greyish granules. Epihymenium hyaline, occasionally with greyish or brownish granules. Asci 8-spored; tholus initially thick, thin when mature. Ascospores muriform, ellipsoidal to fusiform, often medially constricted, with ±rounded to narrowly rounded ends, hyaline, distinctly amyloid, 15–35 (–40) × 7–13 µm, with 6–8 (–10) × 1–4 locules; locules initially ±rounded to slightly angular, becoming oblong to subglobose or ±irregular; transverse septa moderately thin, regular; ascospore wall thick, non-halonate; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish brown, C–, P+ orange-red; containing protocetraric acid (major to trace), fumarprotocetraric acid (major to trace), conprotocetraric acid (minor to trace), confumarprotocetraric acid (minor to trace), virensic acid (trace).
  Corticolous in rainforest in eastern Qld and north-eastern N.S.W., at altitudes to 1100 m; mainly pantropical.  
  Mangold et al. (2009)  

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

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