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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 norstrigosa Elix
  Mycotaxon 59: 414 (1996). T: Western Australia. Boyagin Rock, Boyagin Nature Reserve, 20 km NW of Pingelly, 32°28'S, 116°53'E, 350 m, on large exposed granite outcrops, J. A. Elix 40994, H. T. Lumbsch & H. Streimann, 11.ix.1994;  holo: CANB; iso: HO.  
  Thallus foliose, loosely adnate on rocks, 6-15 cm in wide.  Lobes  imbricate, subconvex, subirregular to linear-elongate, subdichotomously or irregularly divided; margins broadly sinuate, 1.5-4 (-8) mm wide.  Upper surface  yellow-green, shiny but becoming opaque and darkening with age, emaculate, lacking soredia and isidia but with numerous pycnidia, often black-margined particularly towards the apices of the lobes.  Medulla white.  Lower surface pale brown to dark blackish brown, with very dense, brush-like rhizines; rhizines brown to black, simple or often dichotomously branched.  Apothecia adnate or substipitate, 4-7 mm in wide; disc concave, dark brown; the margin involute at first but later becoming undulating and developing irregular cracks.  Ascospores ellipsoid, 8-10 x 4-6 µm.  Pycnidia common; conidia bifusiform, 5-7 x 0.5 µm. CHEMISTRY: Cortex K-;  medulla K+ yellow-red, C-, P+ orange;  containing usnic acid, norstictic acid (major), connorstictic acid (minor).
  This lichen is confined to south-western Western Australia, where it occurs on scattered granite inselbergs.  
  Elix (1996a)  

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

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