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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 taractica (Kremp.) Hale
  Phytologia 28: 489 (1974); Parmelia taractica Kremp., Flora 61: 439 (1878). T: [Regions alpinae Andicum] [alpine regions of Andes], Argentina, 1872–1874, Lorentz & Hieronymus; holo: M. ****Parmelia conspersa var. polyphylloides Müll.Arg., Flora 66: 47 (1883); Parmelia polyphylloides (Müll.Arg.) Gyeln., Repert Spec. Nov. Regni Veg. 35: 371 (1934). T: Fowlers Bay, S.A., A.Richards; holo: G; iso: MEL. ****[Parmelia conspersa var. hypoclista auct. non Nyl. [= Xanthoparmelia sublaevis (Cout.) Hale]: W.A.Weber & C.M.Wetmore, Beih. Nova Hedwigia 41: 70 (1972)] ****[Parmelia pulvinaris auct. non (Zahlbr.) Gyeln. [= Xanthoparmelia pseudohungarica (Gyeln.) Hale]: R.B.Filson, Checklist of Australian Lichens 1st edn, 74 (1983)].  
  Thallus foliose, loosely to moderately adnate, to 7–10 cm wide. Lobes variable, often forming a dense, imbricate mat, ±flat, subirregular to linear-elongate; primary and marginal lobes subdichotomously branched, 2–4 (–8) mm wide, with subrotund apices; laciniae sometimes developing from thallus centre, elongated, dichotomously branched, 0.5–1.5 mm wide; without lobules. Upper surface yellow-green, darkening with age, shiny, emaculate, smooth to slightly rugulose, becoming ±rugose and developing transverse cracks in older lobes, lacking soredia and isidia. Medulla white. Lower surface rugose, papillate, often shiny, pale brown to brown, darker in centre; rhizines moderately dense, especially near lobe margins, simple, often tufted, rarely dichotomously branched, slender, concolorous. Apothecia occasional, sessile, 3–6 mm wide; disc concave, becoming flat, red-brown; thalline exciple rugulose, entire, thick and involute, becoming crenulate. Ascospores 8–10 × 6 µm. Pycnidia common. Conidia bifusiform, 5–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, KC+ red, P+ orange; containing usnic acid, salazinic acid and consalazinic acid.
  Common, found on soil and spreading onto rock in drier mountain and subarid lowland areas of southern Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.); also on the South Is. of New Zealand and in South America (Argentina).  
  Elix (1994z)  

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

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