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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
Leucodecton compunctellum (Nyl.) Frisch

in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 155 (2006)

Thelotrema compunctellum Nyl., Bull. Soc. Linn. Normandie, sér. 2, 2: 77 (1868); Leptotrema compunctellum (Nyl.) Zahlbr., Cat. Lich. Univ. 2: 632 (1923).

T: Lifou, Loyalty Islands, New Caledonia, 1864, C.Thiébault s.n.; lecto: H-NYL 22703, fide M.E.Hale (1972, in herb.).

Thelotrema monosporum var. subgemium Nyl., Bull. Soc. Linn. Normandie, sér. 2, 2: 77 (1868); Thelotrema subgemium (Nyl.) Nyl., Sert. Lich. Trop. Labuan Singapore 5 (1891). T: Lifou, Loyalty Islands, New Caledonia, 1864, C.Thiébaut s.n.; lecto: H-NYL 22702, fide M.E.Hale (1972, in herb.).

Thelotrema elachistoteron Leight., Trans. Linn. Soc. London 27: 169 (1870); Leptotrema elachistoteron (Leight.) Patw. & C.Kulk., Norweg. J. Bot. 24: 128 (1977); Myriotrema elachistoteron (Leight.) Hale, Mycotaxon 11: 133 (1980); Leucodecton elachistoteron (Leight.) Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 155 (2006). T: Central Province, Ceylon [Sri Lanka], G.H.K.Thwaites (CL 132); lecto: BM, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 278 (1981).

Thelotrema reclusum Kremp., in W.Nylander, Bull. Soc. Linn. Normandie, sér. 2, 7: 168 (1873); Leptotrema reclusum (Kremp.) Zahlbr., Cat. Lich. Univ. 2: 639 (1923); Myriotrema reclusum (Kremp.) Hale, Mycotaxon 11: 135 (1980). T: Andaman Islands, S.Kurz 21; lecto: M, fide M.E.Hale, Smithsonian Contr. Bot. 38: 54 (1978); isolecto: BM.

Anthracothecium oligosporum Müll.Arg., Flora 71: 48 (1888); Leptotrema oligosporum (Müll.Arg.) Patw. & Makhija, Bryologist 83: 368 (1980). T: Lower Herbert River, [near Ingham], Qld, Wickham s.n.; lecto: G, fide P.G.Patwardhan & U.Makhija, Bryologist 83: 368 (1980).

Thelotrema microglaenoides Vain., J. Bot. 34: 206 (1896), non T. microglaenoides Vain., Ann. Univ. Fenn. åbo, ser. A, 2(3): 32 (1926), nom. illeg.; Leptotrema microglaenoides (Vain.) Zahlbr., Cat. Lich. Univ. 2: 637 (1923). T: St Vincent, W.R.Elliott 266; holo: TUR-V; iso: BM.

Leptotrema deceptum Hale, Smithsonian Contr. Bot. 16: 39 (1974); Myriotrema deceptum (Hale) Hale, Mycotaxon 11: 133 (1980). T: Dominica, Dec. 1971, M.E.Hale 37860; holo: US.

Myriotrema nuwarense Hale, Bull. Brit. Mus. (Nat. Hist.) Bot. 8: 289 (1981); Leptotrema nuwarense (Hale) Nagarkar, Sethy & Patw., Mycotaxon 27: 74 (1986); Leucodecton nuwarense (Hale) Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 155 (2006). T: Nuwara Eliya District, Central Province, Sri Lanka, M.E.Hale 50272; holo: US; iso: BM.

Leucodecton biokense Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 152 (2006). T: Bioko, Equatorial Guinea, H.Mann s.n.; holo: BM; iso: BM.


  Thallus endophloeodal to epiphloeodal, to c. 500 µm thick, pale grey to greenish grey or pale yellowish brown, often with a grainy-speckled surface, dull to slightly glossy, smooth, continuous to rugose and/or minutely verruculose, rimose or not. Protocortex ±continuous, to c. 20 µm thick. Algal layer poorly to well developed, ±continuous; calcium oxalate crystals usually abundant, large, clustered, occasionally forming columns. Vegetative propagules not seen. Ascomata mostly inconspicuous, to c. 0.4 mm diam., ±rounded, perithecioid, rarely somewhat apothecioid, solitary, immersed to slightly emergent, then hemispherical with similar surface features to the thallus. Disc not visible from above. Pores usually minute, to c. 0.05 (–0.10) mm diam., ±rounded, with an entire margin; apex of proper exciple becoming visible, forming a fused or ±free inner pore margin, incurved, bright-translucent to pale brownish, often thinning and appearing darker in older ascomata. Thalline rim margin thick, ±rounded, entire, small, incurved, concolorous with or brighter than the thallus. Proper exciple fused to apically free in older ascomata, thin to thick, hyaline to pale yellowish internally, pale orange-brown to yellowish brown or brownish marginally, non-amyloid or slightly amyloid at the base. Hymenium to c. 200 µm thick, strongly conglutinated; paraphyses ±bent to distinctly curly in apical parts, unbranched to sparingly branched towards the margins, with slightly thickened tips. Epihymenium indistinct or lacking, hyaline and without granules in perithecioid ascomata, thin and with greyish brown granules and small crystals in apothecioid ascomata. Asci 1–4-spored; tholus usually absent. Ascospores muriform, oblong to oblong-ellipsoidal, with rounded to narrowly rounded ends, becoming distinctly brown at late maturity, non-amyloid to faintly amyloid, 35–80 × 10–35 µm (in 2–4-spored asci), 60–130 × 10–35 µm (in 1-spored asci), with 10–45 × 3–12 locules; locules ±rounded to angular, mostly irregular; transverse septa thin but distinct, regular; ascospore wall thick, non-halonate; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellow, C–, P+ orange; containing constictic acid (major), stictic acid (major), cryptostictic acid (minor to trace), hypoconstictic acid (minor to trace), hypostictic acid (minor to trace).
  A common, corticolous species in northern N.T. and eastern Qld; usually found in mangroves and coastal rainforest, rarely in subtropical montane rainforest, at altitudes to 1100 m. Pantropical.  
  Mangold et al. (2009)  

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

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