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 punctulata G.N.Stevens
  Biblioth. Lichenol. 72: 79 (1999). T: Mt Double Top, Main Ra., Qld, 12 June 1989, R.Stevens 5845NS; holo: MEL; iso: BRI.  
  Thallus shrubby, straggly, to 7 cm long,pale green to grey-green; branching dense, irregular; trunk usually black; branches terete, to 1 mm wide; apices tapered, usually conspicuously forked; branchlets few to many; fibrils numerous on primary and secondary branches, absent from tertiary branches; papillae dense, sparse in basal region. Isidia sparse, rarely dense, only in pseudocyphellae; pseudocyphellae dense on terminal branches, some at tips of low papillae, punctiform, concave; soralia absent. Cortex matt. Medulla arachnoid; axis 1/5–1/3 width of branch, hyaline. Apothecia not seen. CHEMISTRY: Cortex containing usnic acid. Medulla K–; containing scabrosin 4-acetate4’-butyrate (major), scabrosin 4-acetate4’-hexanoate (minor), scabrosin 4,4’-dibutyrate (trace), scabrosin 4,4’-diacetate (faint trace) and ±protocetraric acid (trace) or norstictic acid (minor), salazinic acid (trace) and unknown fatty acids.
  Rare and endemic in moist, exposed, montane sites above 1000 m and in dense, sclerophyll forest at c. 300 m in eastern Qld and N.S.W.  
  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