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 angulata Ach.
  Syn. Meth. Lich. 307 (1814). T: “Amer. Septentr.” [North America], Mühlenburg 22-2; holo: H–ACH 1880 (photo seen). ****Usnea undulata Stirt., Scott. Naturalist (Perth) 7: 75 (1883), nom. illeg., non U. undulata Stirt., Scott. Naturalist (Perth)6: 104 (1881). ****Usnea torquescens Stirt., Trans. & Proc. New Zealand Inst. 30: 391 (1898). T: Bulli, Illawarra, N.S.W., 1882, W.Kirton s.n.; lecto: BM, fide R.W.Rogers, Austrobaileya 1: 509 (1982).  
  Thallus pendulous, to 100 cm long, grey-green, moss-green or pale green; branching subdichotomous; trunk pale; branches 5-sided, 0.5–1.0 mm wide, ridged, alate, with surfaces cracked into uneven plates; secondary branches subparallel, elongate; apices tapered; branchlets sometimes arising from secondary branches, to 2 cm long; fibrils dense on all branches, perpendicular, pectinate, to 10 mm long; papillae absent. Isidia usually absent; pseudocyphellae absent or present on fibrils; soralia absent. Cortex thin, uneven, matt. Medulla thin, dense; axis 3/4 width of branch, hyaline. Apothecia uncommon, lateral or terminal on lateral branches, 2–5 mm diam.; disc concave; margin with few fibrils; lower surface smooth. Ascospores 6–8 (–9) × 5 µm. CHEMISTRY: Cortex containing usnic acid. Medulla K+ yellow → orange or red; containing norstictic acid (major), salazinic acid (minor), consalazinic acid (trace) and connorstictic acid (trace).
  Occurs in moist, open forest and in rainforest canopies in subtropical to temperate Qld, N.S.W., Vic. and Tas. An apparently disjunct population is known from the Atherton Tableland, north-eastern Qld. Also in Norfolk Is., New Zealand, North, Central and South America and Japan.  
  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