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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
Brigantiaea tricolor (Mont.) Trevis.

Caratteri di dodici nuovi genri di lichini 5 (1853)

Biatora tricolor Mont., Ann. Sci. Nat., Bot., sér. 2, 18: 266 (1842); Heterothecium tricolor (Mont.) Mont. & Bosch, in F.A.W.Miquel, Pl. Junghuhn. 4: 462 (1856).

T: Sandwich Islands [Hawaiian Islands], 1836–1837, M.Gaudichaud; lecto: PC n.v., fide J.Hafellner, Symb. Bot. Upsal. 32(1): 68 (1997); isolecto: PC n.v.

Heterothecium pulchrum Müll.Arg., Nuovo Giorn. Bot. Ital. 23: 393 (1891); Lopadium pulchrum (Müll.Arg.) Zahlbr., Cat. Lich. Univ. 4: 313 (1926); Brigantiaea pulchra (Müll.Arg.) Hafellner, Nova Hedwigia 35: 707 (1983). T: Qld, locality unknown, 1889, F.M.Bailey 538; holo: G n.v.

  Thallus whitish grey to pale grey-green, thin, effuse, spreading, rarely with diffuse patchy soralia; lobules absent. Apothecia common, dispersed over the thallus, sessile, constricted at the base, 0.4–2.0 mm wide; disc initially orange but soon becoming brown, plane, often covered with yellow to brownish pruina; margin prominent, smooth, deep orange to red-brown. Exciple biatorine, deeply penetrated by orange crystals; medullary layer colourless, only distinct below the hypothecium. Hymenium colourless, clear to slightly inspersed with small oil droplets, 120–150 μm thick. Hypothecium colourless to pale brown. Asci 90–130 × 30–50 μm. Ascospores 75–110 × 25–40 μm. Spore-borne microconidia occasionally present. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellow, C–, P–; apothecial margin K+ dark blue to black, disc K+ purple; apothecial sections and exciple K+ blue to blue-violet, epihymenium K+ bluish, pruina K+ purple; thallus containing atranorin, zeorin, ±traces of other triterpenes; apothecia containing parietin, ligastroquinone, ±simonyellin.
  Known from bark in rainforest and wet-sclerophyll forest in eastern Qld and N.S.W. This palaeotropical-subtropical species is common in Africa, eastern and southern Asia, Papua New Guinea, New Caledonia and the Hawaiian Islands.  
  Elix (2009m)  

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

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