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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 sammyi (Elix & J.Johnst.) Elix
  Mycotaxon 87: 401 (2003)
Paraparmelia sammyi Elix & J.Johnst., Mycotaxon 32: 408 (1988), as sammyii. T: E of Narrogin on road to Harrismith, W.A., 18 Aug. 1987, J.A.Elix 21634 & M.V.Sargent; holo: CANB; iso: MEL.
  Thallus foliose, loosely to moderately adnate, forming irregular rosettes to 6 cm wide. Lobes rarely imbricate, revolute, twisted, linear-elongate, subdichotomously branched, 0.3–0.6 (–1.5) mm wide. Upper surface lead grey, black-margined towards lobe apices, convex, smooth and shiny at lobe apices, emaculate, lacking soredia and isidia; older lobes occasionally becoming cracked. Lower surface pale tan to brown, darker towards lobe apices; rhizines sparse, often grouped subapically, simple, tufted or not, concolorous. Apothecia rare, subpedicellate, to 2 mm wide; disc concave, becoming flattened, dark brown; thalline exciple thin, entire, smooth. Ascospores 7–10.5 × 4.5–6 µm. Pycnidia numerous, emergent, minute. Conidia 5.5–6.5 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC-, P-; containing atranorin, 4-O-methylhypoprotocetraric acid (major), hypoprotocetraric acid (minor) and ±hypostictic acid (trace).
  This rare endemic species is currently known only from the type locality in south-western W.A.  
  Elix (1994n)  

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

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