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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 subeciliata (Motyka) Swinscow & Krog
  Lichenologist 11: 245 (1979); Usnea pulverulenta f. subeciliata Motyka, in J.Motyka & R.E.G.Pichi-Sermolli, Webbia 8: 388 (1952). T: Semien-Poco, Ethiopia, 1937, R.E.G.Pichi-Sermolli 2816; lecto: FI, fide T.D.V.Swinscow & H.Krog, loc. cit.  
  Thallus shrubby, erect, to 7 cm tall, pale green to green; branching subdichotomous, irregular; trunk pale or partly black; branches terete, 0.7–1.5 mm wide; primary branches partially inflated, rarely foveolate; apices tapered, somewhat curved; branchlets absent; fibrils usually numerous, fine, occurring along the length of a branch; papillae dense; without pseudocyphellae. Isidia sometimes appearing pseudoisidiate and occurring with soredia; soralia numerous, not present on primary branches, excavate to plane, very large towards apices, coalescing. Cortex glassy in appearance. Medulla lax to moderately dense; axis 1/4–1/3 width of branch, hyaline. Apothecia not seen. CHEMISTRY: Cortex containing usnic acid. Medulla K+ yellow → orange: containing norstictic acid (minor) and caperatic acid or other fatty acids, or salazinic acid (minor) and fatty acids, or salazinic acid (minor) and consalazinic acid (trace), or rarely salazinic acid (minor), galbinic acid (trace), ±norstictic acid (trace); medulla K–: containing fatty acids only, or no lichen substances detected.
  Usnea subeciliata grows on trees and shrubs in open forest or rainforest in W.A., S.A., south-eastern Qld, N.S.W., Vic. and Tas. Also in East Africa.  
  Stevens (2004)  

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

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