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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 elixii Kalb

Herzogia 10: 64 (1994)

T: Hervey Range, 45 km SW of Townsville, Qld, 19°26’S, 146°24’E, alt. 350 m, on granite rock in dry-sclerophyll forest, 20 June 1986, J.A.Elix 20424; holo: CANB; iso: Herb. Kalb.

  Thallus 2–3 cm wide, adnate to loosely adnate, subdichotomously lobate, dying centrally so that mature thalli sometimes appearing ring-like. Lobes radiating, discrete to contiguous or imbricate, convex, 0.2–0.6 mm wide, subrotund at the apices. Upper surface grey to dark grey or grey-black, with very sparse pruina at the lobe tips or epruinose; dactyls, isidia and soredia absent. Pseudocyphellae distinct, laminal, forming a dense network on the upper surface of the lobes. Medulla orange. Lower surface black in the centre, paler towards the margin; rhizines moderately dense, ±furcate. Apothecia common, obscurascens-type, 0.5–0.8 mm wide; disc epruinose. Internal stipe distinct, whitish to dirty brown, K–, P–. Ascospores 10–14 × 6–7 μm. Pycnidia not seen.
CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow, UV–; medulla K+ violet, C–, P+ purple; containing atranorin (minor), chloroatranorin (minor), unknown terpenes (minor), unknown pigment (minor).
  Known only from the type locality in north-eastern Qld; grows on rock.  
  Elix (2009l)  

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