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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 amplexula (Stirt.) Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 192 (1986); Parmelia amplexula Stirt., Trans. & Proc. Roy. Soc. Victoria 17: 69 (1881). T: near Brisbane, Qld, F.M.Bailey 262; holo: BM. *****Parmelia conspersa var. polyphylloides f. exasperata Müll.Arg., Flora 66: 47 (1883); Parmelia subexasperata (Müll.Arg.) Gyeln., Repert. Spec. Nov. Regni Veg. 29: 288 (1931); Parmelia ambigua var. exasperata (Müll.Arg.) Gyeln., Ann. Hist.-Nat. Mus. Natl. Hung. 30: 125 (1936). T: Toowoomba, Qld, Hartmann s.n.; lecto: G, n.v., fide M.E.Hale, Smithsonian Contr. Bot. 74: 68 (1990). *****Parmelia violascens Stirt., Trans. & Proc. New Zealand Inst. 32: 77 (1899). T: Grampian Mountains, Vic., D.Sullivan; lecto: GLAM, fide R.W.Rogers, Austrobaileya 1: 507 (1982). *****Parmelia lesdainiana Gyeln., Repert. Spec. Nov. Regni Veg. 36: 161 (1934). T: Tweed Heads, N.S.W., 3 Nov. 1898, E.Cheel; lecto: BP, n.v., fide M.E.Hale, loc. cit. *****Parmelia protoisidiata Gyeln., Repert. Spec. Nov. Regni Veg. 36: 162 (1934). T: Mt Pordon, Vic., Harrison 1072; lecto: BP, n.v., fide M.E.Hale, loc. cit.  
  Thallus foliose, moderately adnate to adnate, to 5–10 cm wide. Lobes sparingly imbricate or not, flat, subirregular to sublinear-elongate, irregularly branched, 0.8–2 (–3) mm wide; central laciniae flat or absent. Upper surface yellow-green, commonly blackening towards centre as a result of dark-tipped isidia, dull, emaculate, smooth, without areolae, without soredia; isidia sparse to dense, cylindrical, simple or branched and coralloid, to 2 mm high, apices syncorticate. Medulla white. Lower surface pale brown to dark brown; rhizines sparse to moderately dense, simple, slender, concolorous. Apothecia rare, subpedicellate, 1.5–6 mm wide; disc strongly concave, becoming ±flat, shiny, dark brown; thalline exciple thin, involute at first, persistent, isidiate. Ascospores 7–12 × 5–6 µm. Pycnidia rare. Conidia bifusiform, 6–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC+ rose, P-; containing usnic acid, ±loxodin, norlobaridone (major), ±scabrosin 4,4'-diacetate, ±scabrosin 4-acetate 4'-butyrate, ±scabrosin 4,4'-dibutyrate and ±scabrosin 4-acetate 4'-hexanoate; rarely contains traces of norlobariol, isonorlobaridone, norlobariol methyl ester, conorlobaridone, constipatic acid, protoconstipatic acid or unidentified compound.
  Widely distributed and common throughout Australia, including Norfolk Is. and Lord Howe Is.; also in South Africa and New Zealand. Generally found on rock, rarely on dead wood or soil.  
  Elix (1994z)  

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

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