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 xanthomelanoides Elix & J.Johnst. | ||
| Mycotaxon 33: 363 (1988). T: west of Springton along the High Eden road, Mt Lofty Ranges, S.A., 20 May 1976, J.A.Elix 2251; holo: CANB; iso: MEL. | ||
| Thallus small-foliose to subcrustose, very tightly adnate, to 2–3 cm wide. Lobes sparingly imbricate, ±contiguous to widely separate, flat, linear-elongate, subdichotomously branched, 0.2–0.8 (–1.2) mm wide. Upper surface yellow-green, darkening to deep olive-brown or blackish in older lobes, dull, emaculate, lacking soredia and isidia; older lobes often developing transverse cracks, ultimately becoming areolate. Medulla white. Lower surface pale tan to brown, darker at lobe apices; rhizines sparse, simple, rudimentary, robust, short (c. 0.1 mm), concolorous. Apothecia subpedicellate, to 1 mm wide; disc weakly concave, black; thalline exciple smooth, narrow, entire, ±crenulate. Ascospores 8–9 × 6–7 µm. Pycnidia common. Conidia bifusiform to elongate-bifusiform, 5–9 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow, C-, P+ orange; containing usnic acid, stictic acid (major), constictic acid (minor), norstictic acid (minor) and cryptostictic acid (trace). | ||
| Rare, endemic, on rock in temperate areas of southern Australia (W.A., S.A. and N.S.W.). | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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