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 leucoxantha (Spreng) R.Sant. & Hafellner | ||
in J.Hafellner & A.Bellemère, Nova Hedwigia 35: 246 (1982) Lecidea leucoxantha Spreng., Kongl. Vetensk.-Akad. Handl. 1820: 46 (1820). T: Serra do Mar, Serra de Parana-Piacaba, above Juquitiba, c. 60 km SW of São Paulo, São Paulo, Brazil, 11 May 1978, K.Kalb (Lich. Neotropici 165); neo: GZU n.v., fide J.Hafellner, Symb. Bot. Upsal. 32(1): 52 (1997); isoneo: M, UPS, Herb. Kalb n.v. Brigantiaea mariae Trevis., Riv. Period. Lav. Accad. Sci. Lett. Arti Padova 249 (1853). T: “Ad arborum cortices in Capite Bonae-Spei”, [Cape of Good Hope, South Africa], J.F.Drège; neo: UPS n.v., fide J.Hafellner, Symb. Bot. Upsal. 32(1): 52 (1997). |
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| Thallus whitish grey to pale grey-green, thin, effuse, spreading, rarely with diffuse patchy soralia; lobules absent. Apothecia common and dispersed over the thallus, sessile, constricted at the base, 0.4–2.0 mm wide; disc vivid orange, ±plane, often with yellow-orange pruina; margin prominent, rather fragile, vivid orange. Exciple biatorine, penetrated by orange crystals; medullary layer colourless or indistinct. Hymenium colourless, 120–150 μm thick. Hypothecium colourless to pale brown. Asci 85–110 × 30–45 μm. Ascospores 65–105 ×
22–40 μm. Spore-borne microconidia frequently present. Pycnidia globose to ovate, 50–100 μm wide. Conidia 3–4 × c. 1 μm. CHEMISTRY: Thallus K+ yellow, C–, P–; apothecia K+ reddish purple; apothecial sections, exciple and epihymenium K+ carmine; thallus containing atranorin, zeorin, ±traces of other triterpenes; apothecia containing parietin. |
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| Known from Qld where it is rare on the bark of trees. A common, pantropical-subtropical species in Africa, North, Central and South America; very rare in Asia, Christmas Island and Papua New Guinea. | ||
| Elix (2009m) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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