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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
Hypotrachyna sinuosa (Sm.) Hale
  Smithsonian Contr. Bot. 25: 63 (1975); Lichen sinuosus Sm., Engl. Bot. 29: pl. 2050 (1809); Parmelia sinuosa (Sm.) Ach., Syn. Meth. Lich. 207 (1814). T: Dumfriesshire, England, Burgess; lecto: LINN, fide M.E.Hale, loc. cit.  
  Thallus loosely adnate to adnate, to 2–7 cm wide. Lobes separate or loosely imbricate, sublinear, dichotomously branched, 1–3 mm wide, subascending apically; margins entire, shiny, black; apices truncate. Upper surface yellow-green, flat, shiny, smooth, without maculae, pustules and isidia; soralia terminal or subterminal, capitate; soredia fine, powdery, pale yellow at first, becoming blackened. Medulla white. Lower surface shiny, rugulose, often pale brown at lobe apices; rhizines dense, squarrosely to dichotomously branched, extending beyond lobe in a dense mat. Apothecia not seen. [According to Hale (1975) they are very rare, sessile, 1–4 mm wide. Ascospores 10–14 × 7–9 µm.] Pycnidia not seen. CHEMISTRY: cortex K-, KC+ yellow, UV-; medulla K+ yellow then red, C-, P+ orange; containing usnic acid, salazinic acid (major), consalazinic acid (minor) and ±norstictic acid (trace).
  Relatively common in Tas.; also in Vic. and Macquarie Is. Otherwise a cosmopolitan species. Grows on bark and, rarely, rock.  
  Elix (1994h)  

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

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