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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
Pyxine coccifera (Fée) Nyl.

Mém. Soc. Sci. Cherbourg 5: 108 (1857)

Parmelia coccifera Fée, Essai Crypt. Écorc. 126 (1825).

T: ad corticem Alcornocae; holo: G n.v.

  Thallus 2–6 cm wide, adnate to loosely adnate, subdichotomously lobate. Lobes radiating, discrete to ±weakly contiguous, plane to convex, but often slightly concave towards the tips, 0.4–1.2 mm wide, subrotund at the apices. Upper surface grey to yellowish grey or dull yellow, sparsely pruinose at the lobe tips or epruinose; dactyls and isidia absent. Pseudocyphellae bright red, marginal and laminal, subreticulate, often developing into soralia. Soralia marginal and laminal, orbicular to linear, ±becoming excavate, producing bright red and grey granular soredia. Medulla pale yellow in upper part; lower medulla white. Lower surface black in the centre, paler towards the margin; rhizines ±dense, furcate. Apothecia very rare, obscurascens-type, 0.5–1.5 mm wide; disc epruinose or weakly pale grey-pruinose. Internal stipe distinct, pale yellow in the upper part, white below, K–, P–. Ascospores 14–18 × 6–8 μm. Pycnidia not seen.
CHEMISTRY: Cortex K+ yellow, UV–; medulla K–, C–, KC–, P–; red-pigmented medulla K+ purple, C+ purple-brown, KC+ violet, P–; containing atranorin, chloroatranorin, chiodectonic acid, methyl pyxinate, methyl 3-O-methylpyxinate, 25-acetoxy-20,24-epoxydammerane-3-one, 25-acetoxy-20,24-epoxydammerane-3β-ol,±unknown terpenes (trace).
  Occurs on rocks and dead wood in coastal and hinterland areas of the Kimberley region of northern W.A., northern N.T. and north-eastern Qld. Also in South America and Africa.  
  Elix (2009c)  

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

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