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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
Flavoparmelia haysomii (C.W.Dodge) Hale
  Mycotaxon 25: 605 (1986); Parmelia haysomii C.W.Dodge, Nova Hedwigia 15: 295 (1968). T: raised beach terrace south of Lusitania Bay, Macquarie Island, 23 Mar. 1950, N.M.Haysom Z136; holo: FH; iso: MEL.  
  Thallus loosely adnate to adnate, to 8–15 cm wide. Lobes laterally imbricate to ±contiguous, 1–3 mm wide; apices rotund. Upper surface pale straw-coloured to yellow-green, broadly undulating, rugose centrally, dull to slightly shiny, often with reticulate white maculae towards lobe apices, lacking isidia; dactyls laminal on older lobes, large, thick, simple or sparingly branched, forming pustules, fragile, rarely erumpent apically and forming granular soredia. Medulla white throughout, or lower medulla yellow. Lower surface with sparse rhizines; rhizines simple or dichotomously branched, black in thallus centre sometimes becoming pale towards margins. Apothecia rare, sessile to subpedicellate, 2–4 mm wide; disc deeply concave at maturity, cinnamon-brown; thalline exciple rugulose but not pustulate. Ascospores tapering to one end, 12–15 × 7–8 µm. Pycnidia scattered. Conidia bacilliform, c. 6 × 1 µm. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC-, P+ orange-red; pigmented medulla K+ purple; containing usnic, protocetraric acid (major), caperatic acid (major), ±skyrin (in pigmented medulla), ±gyrophoric acid and with or without unidentified compounds.
  Very common, occurs on rock, rarely on bark, in all States and Territories; also Lord Howe Is., Macquarie Is. and New Zealand.  
  Elix (1994g)  

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

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