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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 xerophila Elix & J.Johnst.
  in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 358 (1986). T: Mt Remarkable, Melrose, Flinders Ranges, S.A., 28 Oct. 1984, J.A.Elix 17752 & L.H.Elix; holo: CANB.  
  Thallus small-foliose to subcrustose, very tightly adnate, to 1–3 cm wide. Lobes contiguous, not imbricate, flat, sublinear, irregularly branched, 0.2–0.8 (–1) mm wide. Upper surface yellow-green, darkening to deep olive-brown or blackish in older lobes, dull, emaculate, becoming cracked and eventually forming areolae in thallus centre, lacking soredia; isidia simple or sparingly branched, globose then gnarled-cylindrical or inflated; isidia apices syncorticate, solid, brown. Medulla white. Lower surface mostly black, partly brown-black, brown near lobe apices; rhizines moderately dense, simple, often grouped subapically, black or else part of lower surface adhering directly to substratum. Apothecia and pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC+ yellow-orange, P-; containing usnic acid, barbatic acid and 4-O-demethylbarbatic acid.
  A rarely collected, but possibly overlooked, endemic species growing on rock in the Flinders Ra. (S.A.).  
  Elix (1994z)  

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

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