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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 phillipsiana (Filson) Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 307 (1986); Parmelia phillipsiana Filson, Muelleria 4: 324 (1981). T: cliffs on western side of island, c. 1 km south of Double Point, Macquarie Island, 3 Feb. 1964, R.B.Filson 5904 & J.Phillips; holo: MEL.  
  Thallus small-foliose, adnate to tightly adnate, to 6 cm wide. Lobes contiguous throughout, sublinear, irregularly branched, 0.5–1.5 mm wide; apices round. Upper surface pale yellowish green, weakly convex, slightly shiny, sparsely maculate, smooth, without soredia; lobe margins brownish black; isidia dense, cylindrical, coralloid, small and simple near margins, becoming taller (to 2 mm) and branched towards centre, ±forming a mat; isidia apices syncorticate and intact. Medulla white. Lower surface mostly black, partly dark brown; rhizines produced right to margins of lobes, sparse, simple, black. Apothecia rare, sessile or subpedicellate, to 8 mm wide; disc flat then undulating, red-brown to black-brown; thalline exciple thin, crenate, isidiate. Ascospores 7–9 × 5–6 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K+ yellow, C-, KC-, P+ brick-red; containing usnic acid, stictic acid, constictic acid, norstictic acid (trace) and cryptostictic acid (trace).
  On rock in cooler mountain areas of N.S.W., A.C.T., Vic. and Tas., and on Macquarie Is.; also on the South Is. of New Zealand (Denniston Plateau).  
  Elix (1994z)  

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

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