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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
Fibrillithecis halei (Tuck. & Mont.) Mangold

in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 654 (2009)

Porina halei Tuck. & Mont., Ann. Sci. Nat., Bot., sér. 4, 8: 295 (1857); — Thelotrema halei (Tuck. & Mont.) Nyl., Ann. Sci. Nat., Bot., sér. 4, 11: 221 (1859).

T: Venezuela, Dec. 1838, A.Fendler s.n.; lecto: FH-TUCK, fide M.E.Hale (1972, in herb.); isolecto: H-NYL.

Thelotrema pachystomum subsp. piluliferum Tuck., Proc. Amer. Acad. Arts Sci. 7: 227 (1866). T: Waiahu Mtns, Oahu, Sandwich Islands [Hawaiian Islands], H.Mann s.n.; lecto: FH-TUCK,fide A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 140 (2006).

Thelotrema argenteum Müll.Arg., Hedwigia 30: 50 (1891). T: Bellenden Ker, Qld, F.M.Bailey 547; holo: G; iso: BM, BRI, C, NSW, NY, TNS, WIS.

Thelotrema vernicosum Zahlbr., Ann. Mycol. 10: 370 (1912); Fibrillithecis vernicosa (Zahlbr.) Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 140 (2006). T: Koolau Mtns, Oahu, Hawaiian Islands, J.F.Rock 101; lecto: W, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 264 (1981); isolecto: FH.

Thelotrema platysporum Harm., Bull. Soc. Sci. Nancy, sér. 3, 13: 41 (1912); Fibrillithecis platyspora (Harm.) Frisch, in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 137 (2006). T: New Caledonia or Australia [“pro maxima parte in Nova Caledonia, pro minima vero in Australia collecti”], R.P.Pionnier 38;lecto: DUKE, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 266 (1981); isolecto: FH.

Thelotrema gibbosum H.Magn., in H.Magnusson & A.Zahlbruckner, Ark. Bot. 31A(1): 53 (1943). T: Haelaau, W Maui, Hawaiian Islands, Selling 5836; lecto: UPS, fide M.E.Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 264 (1981); isolecto: S.

Thelotrema diminitum Hale, Phytologia 27: 494 (1974). T: Bako Natl Park, Sarawak, Malaysia, M.E.Hale 30536; holo: US.

  Thallus pale greenish to yellowish grey, dark olive-grey or off-white, ±glossy, smooth, rarely patchily pruinose, ±verrucose, usually rimose, rarely somewhat areolate, to c. 400 µm thick. True cortex usually continuous, to c. 30 µm thick, consisting of irregular or periclinal hyphae. Algal layer ±well developed, continuous, with ±abundant clusters of small to large calcium oxalate crystals. Vegetative propagules not seen. Ascomata conspicuous, to c. 1.0 (–1.5) mm diam., ±rounded, somewhat irregular (fused ascomata), perithecioid to apothecioid, solitary to fused, rarely moderately clustered, immersed to strongly emergent, then depressed-cylindrical to urceolate, with a non-rimose surface. Disc usually not visible from above, in open to gaping ascomata partly visible, pale flesh-coloured, with a whitish pruina. Pore small and opening at late maturity, sometimes broad, rarely gaping, usually not more than c. 80 µm diam., exceptionally to c. 0.2 mm diam., rounded to slightly irregular; pore margin rarely entire to fibrous and formed by the apical proper exciple, then usually ±sunken; fused proper exciple often becoming apically visible from above due to the evanescent thalline rim margin, concolorous with the thalline rim to somewhat greyish or brownish. Occasionally, the proper exciple becoming partly to entirely detached, then visible from above, with a whitish-pruinose surface. Thalline rim margin ±rounded, entire or often ±eroded, small to moderately broad, rarely gaping, incurved, predominantly concolorous with the thallus. Proper exciple conspicuous, mainly fused, rarely becoming ±free, thick. Hymenium to c. 180 µm thick, strongly conglutinated. Ascus tholus initially thick, thin when mature. Ascospores subglobular to oblong, with rounded ends, amyloid, initially halonate, 10–30 × 7–15 (–18) µm, with 4–6 (–8) × 1–4 (–6) locules; locules mostly ±rounded, subglobular to oblong, with end cells of the same shape; transverse septa thick, irregular; endospore thick. Pycnidia immersed in the thallus or in thalline warts. Conidia bacilliform, c. 2–4 × 0.5 µm.
CHEMISTRY: Thallus K–, C–, P– or P+ yellow; containing an unknown sterol [“platysporum unknown”: Rf 57 in B’, (dark) brown after charring with yellowish to greenish aurora in UV] (major to minor or lacking), psoromic acid (major to trace or lacking), 2’-O-demethylpsoromic acid (minor to trace or lacking), traces of unknowns of the psoromic acid chemosyndrome.
  Common on tree bark and on corticolous bryophytes in rainforest (to 1350 m) and in mangroves in eastern Qld and north-eastern N.S.W.; mainly pantropical.  
  Mangold et al. (2009)  

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

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