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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 rugulosa Stirt.

Trans. & Proc. New Zealand Inst. 30: 396 (1898)

T: near Jimbour, Qld, F.M.Bailey s.n.; holo: BM n.v.

  Thallus 2–4 cm wide, adnate, subdichotomously lobate. Lobes radiating, discrete to contiguous or rarely imbricate, plane to convex but often slightly concave towards the tips, 0.3–1.2 mm wide, subrotund to subtruncate at the apices. Upper surface white to whitish grey, becoming markedly convex and rugose in the centre, densely pruinose, particularly towards the lobe tips; pseudocyphellae, dactyls, isidia and soredia absent. Medulla yellow to pale yellow in the upper part; lower medulla white. Lower surface black in the centre, paler towards the margin; rhizines ±dense, furcate. Apothecia common, cocoes-type, 0.4–1.0 mm wide; disc epruinose. Internal stipe distinct, white, K–, P–. Ascospores 15–25 × 5–7 μm. Pycnidia not seen.
CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow, UV–; pigmented medulla K+ purple brown, C–, P–; white medulla K–, C–, KC–, P–; containing atranorin (minor), chloro-atranorin (minor), unknown terpenes (minor), unknown pigment (minor).
  Endemic on bark in northern W.A. and inland areas of eastern Qld.  
  Elix (2009l)  

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

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