Department of the Environment and Water Resources home page

About us | Contact us | Publications | What's new

Header imagesHeader imagesHeader images

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 mekista (Stirt.) G.Awasthi
  Current Sci. 54: 353 (1985); Usnea longissima subsp. mekista Stirt., Scott. Naturalist (Perth) 6: 105 (1881). T: Himalayas [precise locality unknown], J.D.Hooker & Thomson 1718; holo: GLAM; iso: BM.  
  Thallus pendulous, to more than 100 cm long,green to deep green; branching from primary branches subparallel; trunk pale; branches terete to irregularly slightly flattened, 0.5–1.0 mm wide, with annular cracks, partly decorticate (irregular plates of cortex remaining); branchlets short; fibrils 2–10 mm long; papillae absent. Isidia on some fibrils and dense on plates of cortex, surrounded by pulverulent tissue; pseudocyphellae raised, orbicular, mainly on fibrils and branchlets; soralia absent. Cortex dull. Medulla powdery; axis 1/2–3/5 width of branch, pink to wine-red or brown. Apothecia not seen. CHEMISTRY: Cortex containing usnic acid. Medulla K–; containing protocetraric acid (major) and ±malonprotocetraric acid (minor).
  Rare on trees at rainforest margins in eastern Qld. Also in East Africa and India.  
  Stevens (2004)  

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

This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from Australian Biological Resources Study. Requests and inquiries concerning reproduction and rights should be addressed in the first instance to Dr P. McCarthy. These pages may not be displayed on, or downloaded to, any other server without the express permission of ABRS.

Top | About us | Advanced search | Contact us | Information services | Publications | Site index | What's new