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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
Thelotrema lacteum Kremp.

in W.Nylander, Flora 47: 269 (1864)

Phaeotrema lacteum (Kremp.) Müll.Arg., Flora 70: 398 (1887).

T: Australia, comm. Hochstetter; lecto: M, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 256 (1981); isolecto: H-NYL 22814.

Phaeotrema consimile Müll.Arg., Flora 70: 398 (1887). T: Russell River, Qld, W.A.Sayer s.n.; holo: G.

Thelotrema sitianum Vain., Étud. Class. Lich. Brésil 2: 81 (1890); Phaeotrema sitianum (Vain.) Zahlbr., in H.G.A.Engler & K.A.E.Prantl, Nat. Pflanzenfam.,1, 1: 119 (1905); Thelotrema lepadodes Tuck. subsp. sitianum (Vain.) G.Salisb., Lichenologist 5: 270 (1972). T: Minas Gerais, Brazil, E.A.Vainio, Lich. Bras. Exs. 565; lecto: TUR-V 26808, fide G.Salisbury, Lichenologist 5: 270 (1972).

Ocellularia cricota F.Wilson, in F.M.Bailey, Bot. Bull. Dept Agric., Queensland 7: 32 (1891); Phaeotrema cricotum (F.Wilson) Müll.Arg., Hedwigia 32: 130 (1893). T: Southport, Qld, F.R.M.Wilson s.n.; lecto: G, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 256 (1981); isolecto: BRI (AQ721231).

Ocellularia zeorina Müll.Arg., Nuovo Giorn. Bot. Ital. 23: 394 (1891). T: Brisbane, Qld, F.M.Bailey 460 p.p.; holo: G.

Ocellularia annulosa Müll.Arg., Bull. Herb. Boissier 3: 314 (1895). T: Mt Gravatt [Brisbane], Qld, 1894, J.Shirley s.n.; holo: G; iso: BRI (AQ721217).

  Thallus endophloeodal to epiphloeodal, to c. 300 µm thick, pale grey to pale yellowish grey or pale greyish green, dull, occasionally slightly glossy, smooth to uneven, continuous to verrucose or verruculose, often romose. Protocortex ±continuous, to c. 30 µm thick, rarely becoming conglutinated and forming a true cortex of periclinal hyphae. Algal layer continuous or discontinuous, poorly to well developed; calcium oxalate crystals usually abundant, small to large, scattered or in clusters. Vegetative propagules not seen. Ascomata conspicuous, to c. 1 mm diam., ±rounded to slightly irregular, apothecioid, rarely somewhat chroodiscoid, erumpent to sessile, solitary or fused, ±distinctly emergent, mostly depressed-urceolate to depressed-cylindrical. Disc usually partly to completely visible from above, whitish to pale greyish, strongly pruinose. Pores moderately wide to gaping, to c. 0.8 mm diam., ±rounded to irregular, the apex and upper part of the proper exciple visible from above, free, usually entire and ±jagged, occasionally eroded, off-white, often pruinose, incurved to erect or recurved, sometimes slightly shrunken. Thalline rim margin usually thick, ±rounded to slightly irregular, entire to more often distinctly split or lacerate, often eroded, concolorous with the thallus; thalline rim erect to slightly recurved. Proper exciple free, thick, pale yellowish internally, yellowish brown to greyish brown marginally, apically sometimes dark brownish, usually covered by greyish granules, ±distinctly amyloid at the base. Hymenium to c. 200 µm thick, not inspersed, moderately conglutinated; paraphyses straight to slightly bent, parallel to slightly interwoven, unbranched, the tips moderately thickened, somewhat irregular; lateral paraphyses occasional, inconspicuous, to c. 30 µm long; columellar structures absent. Epihymenium hyaline, with dark grey granules. Asci 4–8-spored; tholus initially thick, thin when mature. Ascospores transversely septate, oblong to oblong-fusiform or clavate, with rounded to subacute ends, often ±bent, hyaline, becoming brown, moderately to strongly amyloid, (50–) 70–110 (–130) × 8–12 µm, with (12–) 16–24 (–26) locules; locules ±rounded to slightly angular, subglobose to lentiform; end cells hemispherical to conical; septa thin to thick, regular; ascospore wall thick, becoming crenate, with a thick irregular halo when immature. Pycnidia not seen.
CHEMISTRY: Thallus K–, C–, P–; no secondary compounds detectable by TLC.
  Corticolous in mangroves, Nothofagus forest, wet-sclerophyll forest and rainforest in eastern Qld and N.S.W., at altitudes to 920 m; also in Brazil and Japan.  
  Mangold et al. (2009)  

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

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