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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
Xanthoparmelia multipartita (R.Br. ex Cromb.) Hale
  Mycotaxon 20: 79 (1984); Parmelia conspersa var. multipartita R.Br. ex Cromb., J. Linn. Soc., Bot.17: 394 (1880); Parmelia multipartita (R.Br. ex Cromb.) Elix, Austral. J. Bot. 29: 361 (1981). T: near Port Jackson, N.S.W., R.Brown 542; syn: BM (two sheets).  
  Thallus foliose, very loosely adnate, with centre lobate, to 6–9 cm wide. Lobes densely imbricate, flat, linear-elongate, subdichotomously branched, divaricate in places, becoming suberect and exposing black lower surface, 0.5–1 mm wide. Upper surface yellow to yellow-green, becoming brownish and/or blackening after long storage, shiny, emaculate, smooth, lacking soredia and isidia; lobe margins black. Medulla white. Lower surface rugose, jet black; marginal lobe apices brown; rhizines absent or very sparse, simple, robust, short, black. Apothecia sessile, 1–3 (–10) mm wide; disc concave, chestnut-brown, darkening; thalline exciple entire, thick, involute, becoming thin and subentire. Ascospores 6–10 × 3.5–5.5 µm. Pycnidia numerous. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then pale reddish, C-, KC-, P-; containing usnic acid, hypostictic acid (major) and hyposalazinic acid (minor).
  Usually found scattered on exposed, acidic rock in areas of moderate rainfall in south-eastern Australia (N.S.W. and Tas.).  
  Elix (1994z)  

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

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