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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 scabrida subsp. elegans (Stirt.) G.N.Stevens
  Lichenologist 24: 236 (1992); Usnea elegans Stirt., Trans. & Proc. Roy. Soc. Victoria 17: 68 (1881); U. dasypogoides var. elegans (Stirt.) Müll.Arg., Flora 66: 20 (1883). T: Gowrie Mtn, Darling Downs, Qld, F.M.Bailey 13; lecto: GLAM, fide R.W.Rogers, Austrobaileya 1: 508 (1982); isolecto: BM.  
  Thallus erect, rigid, to 3 cm tall; branching from base sparse, subdichotomous, often to 2 cm long, without further branching; short fibrils dense, c. 1 mm; long fibrils very sparse, 2 (–3) mm; papillae absent or rare. Medulla lax; axis 1/3–1/2 width of branch. Apothecia usually less than 5 mm diam., rarely to 10 mm; fibrils dense on margin, usually in 1 row; lower surface fibrillate. CHEMISTRY: Cortex containing usnic acid. Medulla K+ yellow: containing norstictic acid, scabrosins, ±salazinic acid (trace), or norstictic acid only; or medulla K–: containing scabrosins only or no lichen substances detected.
  An endemic subspecies in open forest (usually on Acacia spp. and Callitris spp.) in central and south-eastern Qld, inland N.S.W. and A.C.T.  
  Stevens (2004)  

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

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