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 | ||
| Usnea bicolorata Motyka var. australiensis G.N.Stevens | ||
| Biblioth. Lichenol. 72: 32 (1999). T: 7 km SE of Millaa Millaa, Atherton Tableland, Qld, 1988, G.N.Stevens 5403; holo: MEL; iso: BRI. | ||
| Thallus shrubby, erect to subpendulous or decumbent, to 10 (–17) cm long, pale green with a pink-orange tinge; branching subdichotomous to irregular; trunk with or without annular cracks, pale greenish or black; branches terete, slender, to 1 mm wide; apices tapered; branchlets few to numerous, bearing pseudocyphellae; fibrils mainly in basal part, sparse to dense, to 3 mm long. Isidia sparse or rather dense, in pseudocyphellae; pseudocyphellae numerous, large and conspicuous towards apices; papillae sparse to dense; soralia absent. Cortex glossy. Medulla dense, narrow, with subcortical orange-red pigment; axis 3/5 width of branch, hyaline. Apothecia rare. CHEMISTRY: Cortex containing usnic acid. Medulla K+ yellow → orange-red; containing salazinic acid (minor), galbinic acid (major), norstictic acid (minor), connorstictic acid (trace) and consalazinic acid (trace). |  |
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| An uncommon endemic on bark and fence posts in open, montane forest and rainforest in eastern Qld. | ||
| Stevens (2004) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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