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 | ||
| Xanthoparmelia amphixantha (Müll.Arg.) Hale | ||
| Phytologia 28: 486 (1974); Parmelia amphixantha Müll.Arg., Flora 71: 139 (1888). T: near Lake Albacutya, Vic.,C.French; holo: G. *****Parmelia subamphixantha Gyeln., Ann. Mycol. 36: 290 (1938). T: Vic., 10 June 1892, J.Reader 6; holo: BP. | ||
| Thallus foliose, loosely adnate, forming rosettes to 1–3 cm wide. Lobes often imbricate, ±discrete and separated near margins of thallus, sublinear-elongate, dichotomously branched, 0.5–2 mm wide, lacking lobules. Upper surface pale yellow, convex, dull, maculate especially towards lobe apices, smooth, lacking soredia and isidia; lobe margins not black; often pale blackish brown near lobe apices. Medulla white. Lower surface partly canaliculate, yellow-brown to dark brown, yellow-rimmed; rhizines sparse to moderately dense, simple or sparsely branched, 1–3 mm long, black. Apothecia very rare, sessile to subpedicellate, 1–2 mm wide; disc concave, dark brown; thalline exciple prominent, crenulate, persistent. Ascospores 9–10 × 6 µm. Pycnidia absent. CHEMISTRY: cortex K-, UV-; medulla K+ yellow, C-, KC-, P+ orange; containing usnic acid, stictic acid (major), constictic acid, norstictic acid (minor), cryptostictic acid (trace) and with or without unidentified compound. |  |
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| Common on soil in mallee scrub and subarid grassland areas of S.A., N.S.W., Vic. and Tas. | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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