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 keralensis D.D.Awasthi | ||
Phytomorphology 40: 372 (‘1980’) [1982] T: Pivavara Road railway station, Ernakulum, Kerala, India, on bark of tree, 28 Nov. 1973, K.P.Singh 73.352; holo: LWU n.v. Pyxine isidiolenta R.W.Rogers, Austral. J. Bot. 34: 142 (1986). T: Little Ramsay Bay, Hinchinbrook I., Qld, on bark of Heritiera littoralis at sea level, 18 Aug. 1975, A.B.Cribb 1138; holo: MEL; iso: BM, BRI n.v. |
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| Thallus 2–8 cm wide, loosely adnate, subdichotomously lobate. Lobes radiating, discrete to ±imbricate, plane to slightly convex, 0.3–0.7 mm wide, subrotund to truncate at the apices. Upper surface pale yellowish white to yellowish grey or pale grey, epruinose; dactyls and soredia absent. Pseudocyphellae distinct, marginal and laminal, irregular and linear or becoming reticulate. Isidia laminal, cylindrical, simple or sparingly branched, ±clustered, 0.2–0.5 mm tall, 0.05–0.1 mm thick. Medulla pale yellow to yellow-orange. Lower surface brown-black in the centre, paler towards the margin; rhizines ±dense, short, simple or furcate. Apothecia rare, obscurascens-type, 0.5–1.4 mm wide; disc epruinose. Internal stipe distinct, yellow, K+ red, P–. Ascospores 12–18 × 6–7 μm. Pycnidia not seen. CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow, UV–; medulla K–, C–, P–; containing atranorin (minor), chloroatranorin (minor), unknown terpenes (minor). |
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| Common on bark in coastal forests of the N.T. and eastern Qld. Also in South and East Asia. | ||
| Elix (2009l) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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