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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 bicontinens Elix & T.H.Nash
  Mycotaxon 29: 471 (1987). T: Errinundra [Erinundra] Flora Reserve, 14 km south of Bendoc, Vic., 10 April 1986, J.A.Elix 19949 & H.Streimann; holo: CANB; iso: ASU.  
  Thallus foliose, adnate to tightly adnate, to 3–5 cm wide. Lobes barely imbricate, flat, linear-elongate, dichotomously but sparingly branched, 0.7–1.5 mm wide. Upper surface yellow-green, shiny, emaculate, smooth, lacking soredia and isidia; lobe apices often black-margined. Medulla white. Lower surface shiny, rugose, jet black; rhizines sparse to moderately dense, simple, robust, black. Apothecia sessile, 1–2 mm wide; disc concave, red-brown to dark brown; thalline exciple smooth, thick, involute, becoming thinner. Ascospores 7–8 × 4–5 µm. Pycnidia common. Conidia bifusiform, 6–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow, C-, P+ orange; containing usnic acid, stictic acid (major), constictic acid (minor), norstictic acid (minor) and cryptostictic acid (trace).
  Very rare, in cool temperate forests of southern N.S.W., A.C.T. and East Gippsland, Vic.; also in South Africa. Grows on rock.  
  Elix (1994z)  

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

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