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 pungens Zahlbr. | ||
Ann. Cryptog. Exot. 1: 210 (1928) T: Buitenzorg, Java, [Indonesia], C. van Overeem 23; holo: W n.v.; iso: O n.v. |
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| Thallus 3–10 cm wide, adnate, subdichotomously lobate. Lobes radiating, contiguous or rarely imbricate, plane to convex but often slightly concave towards the tips, 0.5–1.2 mm wide, subrotund to subtruncate at the apices. Upper surface whitish grey to yellowish grey or grey-brown, pruinose towards the lobe tips or epruinose; dactyls, isidia and soredia absent. Pseudocyphellae ±distinct, marginal and laminal, becoming reticulate. Medulla deep orange to yellow-orange in the upper part; lower medulla white. Lower surface black in the centre, paler towards the margin; rhizines ±dense, furcate. Apothecia common, cocoes-type, 0.5–1.5 mm wide; disc epruinose. Internal stipe distinct, white, K–, P–. Ascospores 12–16 × 5–7 μm. Pycnidia not seen. CHEMISTRY: Cortex K+ yellow, C–, KC–, P+ yellow, UV–; medulla K+ purple to purple-brown, C+ red-brown, P+ purple-brown; containing atranorin (minor), chloroatranorin (minor), unknown terpenes (minor), unknown pigment (minor). |
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| Occurs on rocks and bark in the Kimberley region of northern W.A. and in coastal and hinterland forest in eastern Qld. Also in South and East Asia and South America. | ||
| Elix (2009l) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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