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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
Usnea ramulosissima G.N.Stevens & R.W.Rogers
  Proc. Roy. Soc. Queensland 90: 45 (1979); Usnea dasypogoides var. microcarpoides Müll.Arg., Flora 66: 20 (1883); U. dasypoga var. microcarpoides (Müll.Arg.) Zahlbr., Cat. Lich. Univ. 6: 556 (1930); U. microcarpoides (Müll.Arg.) Motyka, Usnea 2: 525 (1937), nom. illeg., non U. microcarpoides (Vain.) Vain., Ann. Acad. Sci. Fenn., ser. A, 27: 67 (1928). T: Clarence R., N.S.W., 1881, J.Wilcox s.n.; lecto: G, fide G.N.Stevens, Lichenologist 24: 240 (1992). ****Usnea luridorufa subsp. pallida Stirt., Scott. Naturalist (Perth)6: 295 (1881). T: Upper Hunter R., N.S.W., Miss Carter 8; holo: GLAM.  
  Thallus shrubby, erect, 2–3 cm tall, grey-green; branching sparse to moderately dense; trunk pale; branches terete, 1–2 mm wide; branchlets absent; fibrils moderately dense to dense, 1–2 mm long; papillae usually dense. Isidia, pseudocyphellae and soralia absent. Cortex glossy. Medulla arachnoid; axis 1/4–1/3 width of branch, hyaline. Apothecia numerous, terminal, 2–6 mm diam.; disc concave to plane; fibrils moderately dense on margin, to 7 mm long; lower surface often with papillae, with or without short fibrils. Ascospores 8.0–9.5 × 5.5–6.5 µm. CHEMISTRY: Cortex containing usnic acid. Medulla K+ yellow → red; containing norstictic acid (major), salazinic acid (minor) and protocetraric acid (minor or trace.
  A rare, endemic species in south-eastern Qld and eastern N.S.W.; grows mainly in mangroves.  
  Stevens (2004)  

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

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