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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 yowaensis Elix & J.Johnst.
  Mycotaxon 29: 369 (1987). T: Yowah Opal Field, near Cunnamulla, Qld, 2 Sept. 1984, M.E.Ballingall 1668B; holo: CANB.  
  Thallus foliose, adnate to tightly adnate, to 3–5 cm wide. Lobes imbricate, flat, subirregular, irregularly branched, 1.5–3 (–4) mm wide; apices ±round. Upper surface yellow-green, dull, with distinct effigurate maculae, lacking soredia and isidia; older lobes becoming markedly rugulose and rugose; lobe apices often black-margined. Medulla white. Lower surface jet black; rhizines sparse to moderately dense, simple, robust, black. Apothecia not seen. Pycnidia rare. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ pale yellow then brown, C-, P+ orange-red; containing usnic acid, fumarprotocetraric acid (major), succinprotocetraric acid, protocetraric acid (trace) and ±lobaric acid.
  Rare, endemic, on rock in arid inland Australia (W.A., Qld and N.S.W.).  
  Elix (1994z)  

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

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