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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 remanens (Elix) Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 314 (1986); Parmelia remanens Elix, Austral. J. Bot. 29: 368 (1981). T: 10 km east of Cooma along the Numeralla road, N.S.W., 19 Jan. 1976, J.A.Elix 1522; holo: MEL.  
  Thallus foliose, adnate, to 4–6 cm wide. Lobes imbricate or not, flat, subirregular, irregularly branched, 1.5–3 (–5) mm wide. Upper surface yellow-green, shiny, emaculate, sometimes rugulose, without soredia; lobes commonly black-margined near apices; isidia moderately dense to dense, warty, becoming cylindrical, simple or branched, becoming coralloid, to 0.2 mm high; isidia apices ±inflated, epicorticate, rarely erumpent, commonly dark to blackened. Medulla white. Lower surface pale brown to dark brown; rhizines moderately dense, slender, simple, concolorous. Apothecia rare, subpedicellate, 1–3 mm wide; disc concave, distorted, shiny, red-brown to dark brown; thalline exciple smooth, entire, shiny, rather thick, involute, isidiate. Ascospores 7–11 × 4–5.5 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC-, P-; containing usnic acid, scabrosin 4,4'-diacetate, scabrosin 4-acetate 4'-butyrate, scabrosin 4,4'-dibutyrate and scabrosin 4-acetate 4'-hexanoate.
  Uncommon, endemic, on rock in coastal, upland and arid areas of southern, central and eastern Australia (W.A., N.T., S.A., Qld, N.S.W., Vic. and Tas. (Bass Strait)).  
  Elix (1994z)  

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

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