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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 coralligera Malme

Bih. Kongl. Svenska Vetensk.-Akad. Handl. 23: 40 (1897)

T: near São Jeronymo, Serra da Chapada, Mato Grosso, Brazil, ad rupes aprices, 3 June 1894, G.O.A.Malme [Exped. Prim. Regnell. Lichens 2749c]; lecto: S n.v., fide T.D.V.Swinscow & H.Krog, Norweg. J. Bot. 22: 53 (1975).

  Thallus 3–10 cm wide, loosely adnate, subdichotomously lobate. Lobes radiating, discrete to ±imbricate, plane to slightly convex, 0.5–1.0 mm wide, subrotund to truncate at the apices. Upper surface pale to dark grey, weakly pruinose towards the lobe tips or epruinose; isidia absent. Pseudocyphellae laminal, irregular to linear or becoming ±reticulate subapically. Dactyls mainly laminal, occasionally marginal, scattered or clustered, nodular to subcylindrical or clavate, short, ±branched, pustulate, bursting apically to produce granular soredia. Medulla creamy yellow to yellow-orange or yellow-brown. Lower surface black in the centre, paler towards the margin; rhizines ±dense, furcate. Apothecia rare, obscurascens-type, 0.5–1.0 mm wide; disc epruinose. Internal stipe distinct, pale yellow to yellow-orange or yellow-brown, K+ greenish, P+ dirty orange-brown. Ascospores 16–20 × 5–7 μm. Pycnidia not seen.
CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow, UV–; medulla K–, C–, P+ orange; containing atranorin (minor), chloroatranorin (minor), testacein (major), unknown terpenes (minor).
  Very rare on bark in hinterland forest in the N.T. Also in Africa, Asia, South America and Papua New Guinea.  
  Elix (2009l)  

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

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