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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 mougeotina (Nyl.) D.J.Galloway
  New Zealand J. Bot. 18: 538 (1981); Parmelia mougeotina Nyl., Lich. Nov. Zel. 27 (1888); Parmelia mougeotii f. mougeotina (Nyl.) Gyeln., Ann. Hist.-Nat. Mus. Natl Hung. 31: 32 (1938). T: New Zealand, C.Knight; holo: H-NYL 34661. *****Parmelia mougeotii var. obscurata Müll.Arg., Bull. Soc. Roy. Bot. Belgique 31: 30 (1892). T: Glen Martin, Saddle Hill near Dunedin, Otago, New Zealand, 6 Nov. 1861, W.L.Lindsay; holo: H; iso: BM. *****[Parmelia mougeotii auct. non Schaer. [= Xanthoparmelia mougeotii (Schaer.) Hale]: W.A.Weber & C.M.Wetmore, Beih. Nova Hedwigia 41: 73 (1972)].  
  Thallus foliose to subcrustose, very tightly adnate, ±rosette forming, to 3–5 (–8) cm wide. Lobes not imbricate, widely separate or rarely contiguous, sublinear-elongate, dichotomously branched, 0.5–1 (–1.5) mm wide; apices markedly incised. Upper surface pale yellow-green, darkening to yellow-brown or black in thallus centre, flat to slightly concave, shiny at lobe apices, dull and irregularly cracked near thallus centre becoming crustose-areolate, lacking maculae and soredia; isidia at thallus centre and ±on marginal lobes, sparse, subglobose or ±distorted cylindrical, simple, fragile to robust, slender (0.04–0.08 mm wide), small (0.1–0.2 mm high); isidia apices ±inflated, syncorticate, brown. Medulla white. Lower surface flat, smooth, shiny, wholly black or partly black-brown; rhizines sparse, simple, black. Apothecia rare, sessile, to 1 mm wide; disc concave to flat, dark brown; thalline exciple prominent, entire, smooth, without isidia. Ascospores 7–9 × 5–6.5 µm. Pycnidia very rare. Conidia bifusiform, 7–9 × 1 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow, C-, KC-, P+ orange; containing usnic acid, stictic acid, constictic acid, norstictic acid (minor), cryptostictic acid (trace), ±menegazziaic acid (trace), and with or without associated unidentified compound (trace).
  Common and widespread, on rock in areas of moderate to higher rainfall throughout Australia (W.A., N.T., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.); also on both islands of New Zealand.  
  Elix (1994z)  

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

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