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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
Hypogymnia kosciuskoensis Elix
  Brunonia 2: 194 (1980). T: summit of Mt Stirling, Vic.,undated, R.B.Filson 9689; holo: MEL.  
  Thallus placodioid, forming orbicular patches to 8 cm wide; marginal and primary central lobes contiguous, crowded, very rugose, subirregularly divided, 0.8–3 mm wide; secondary lobes loose, subdichotomously branched, becoming very imbricate. Upper surface grey with black variegations, to brown-black; lobulate or lobulate-isidioid projections near centre; esorediate. Medulla discolouring with age, hollow. Lower surface dull, roughened, pale brown at apices. Apothecia commonly absent, rarely many, to 5 mm wide, sessile or shortly pedicellate; receptacle pitted, wrinkled, funnel-shaped; disc concave then ±flat, dark brown to bay; thalline exciple entire, persistent, at first ±markedly involute. Ascospores 5–8 × 4–6 µm. CHEMISTRY: cortex K+ yellow; medulla KC+ red, P± red. Physodic acid (major); atranorin, chloroatranorin, 3-hydroxyphysodic acid (minor); alectoronic acid, 2'-O-methylphysodic acid, physodalic acid and protocetraric acid (present or absent).
  On rocks in high alpine areas of N.S.W., A.C.T., Vic., Tas. and New Zealand.  
  Elix (1992a)  

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

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