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 | ||
| Buellia xanthonica (Elix) Elix | ||
Fl. Australia 57: 660 (2009) Hafellia xanthonica Elix, Australas. Lichenol. 59: 36 (2006). T: First North Rd, Wotto Nature Reserve, 21 km by road NE of Eneabba, W.A., 5 May 2004, J.A.Elix 28876; holo: PERTH; iso: CANB. |
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| Thallus corticolous or lignicolous, 1.0–2.5 cm wide, thin, continuous, smooth to indistinctly areolate, yellow-white to pale yellow-grey or yellow-green, uneven, occasionally verrucose. Prothallus appearing as a black line surrounding the thallus, or not apparent. Apothecia common, 0.4–1.5 mm wide, sessile; disc black, epruinose, plane or slightly convex; margin black, thin, usually persistent, becoming excluded in convex apothecia. Proper exciple dark brown to brown-black, the inner part somewhat paler. Epihymenium 10–20 μm thick, dark brown, K–. Hymenium 70–100 μm thick, inspersed with oil droplets. Hypothecium 60–80 μm thick, brown. Asci usually 8-spored, occasionally with fewer ascospores. Ascospores
1-septate, 14–35 × 6–15 μm, with moderately strong subapical but narrow septal wall thickenings; outer wall smooth. Pycnidia not seen. CHEMISTRY: Thallus K–, C–, KC–, P–; containing 4,5-dichlorolichexanthone (major), ±brialmontin 1 (minor), ±brialmontin 2 (minor). |
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| Endemic on bark and wood in hinterland forest and woodland in W.A., N.S.W. and Tas. | ||
| Elix (2009l) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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