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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 rubrireagens (Gyeln.) Hale
  Phytologia 28: 488 (1974); Parmelia rubrireagens Gyeln., Ann. Mycol. 36: 288 (1938). T: Rocky Hill, Goulburn, N.S.W., Mar. 1901, W.W.Watts 90; holo: BP. ***** [Xanthoparmelia eradicata auct. non (Nyl. ex Cromb.) Hale: J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 239 (1986)].  
  Thallus foliose, very loosely adnate, to 6–10 cm wide. Lobes moderately imbricate, flat, linear-elongate, subdichotomously branched, divaricate in places, becoming suberect, exposing lower surface, 0.5–1 (–1.5) mm wide; margins black. Upper surface yellow-green, blackening with age, shiny, emaculate, smooth, lacking soredia and isidia. Medulla white. Lower surface rugose, mostly jet black; rhizines absent or very sparse, simple, ±tufted, short, robust, black. Apothecia sessile, 1–3 mm wide; disc concave, chestnut-brown, darkening with age; thalline exciple entire, thick, involute, becoming thin and crenulate. Ascospores 7–8 × 5–6 µm. Pycnidia common. Conidia bifusiform, 4–5 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, P+ orange-red; containing usnic acid, salazinic acid, consalazinic acid and ±norstictic acid (trace).
  Relatively common, on rock in the ranges of southern and eastern Australia (S.A., Qld, N.S.W., A.C.T., Vic. and Tas.); also on the South Is. of New Zealand (central Otago).  
  Elix (1994z)  

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

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