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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 convoluta (Kremp.) Hale
  Phytologia 28: 487 (1974); Parmelia convoluta Kremp., Verh. K. K. Zool.-Bot. Ges. Wien 30: 337 (1880); Parmelia vagans f. convoluta (Kremp.) Gyeln., Ann. Hist.-Nat. Mus. Natl Hung. 30: 127 (1936). T: Central Australia, E.Giles; holo: M. ***** [Parmelia camtschadalis auct. non Ach. [= Xanthoparmelia camtschadalis (Ach.) Hale]: R.B.Filson, Checklist of Australian Lichens 2nd edn, 84 (1986)]  
  Thallus foliose, unattached, to 2–6 cm wide. Lobes strongly convolute, contorted, elongate, sublinear, sparsely dichotomously branched, 3.5–8 mm wide when flattened, 1–4 mm wide when dry and convoluted; marginal and laminal lobules sometimes present in older lobes. Upper surface pale yellow-green, darkening in older central lobes, dull, emaculate, smooth, becoming rugulose and cracked in older lobes, without soredia and isidia. Medulla white. Lower surface pale brown to dark brown; rhizines very sparse, simple, concolorous. Apothecia rare, shortly pedicellate, to 4 mm wide; disc concave, dark brown; thalline exciple thick, crenulate, incised, markedly involute, becoming less so. Ascospores 10–11 × 6 µm. Pycnidia rare. Conidia bifusiform, 6–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then red, C-, P+ orange; containing usnic acid, salazinic acid and consalazinic acid.
  Endemic, scattered on bare earth in mallee scrub, in drier areas of southern S.A. and western Vic.  
  Elix (1994z)  

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

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