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 segregata Elix & J.Johnst. | ||
| Mycotaxon 33: 360 (1988). T: Calder Highway, Vic., 10 Dec. 1984, J.Johnston 1502; holo: CANB. | ||
| Thallus small-foliose, lobate in thallus centre, loosely adnate, to 4–6 cm wide. Lobes moderately imbricate, subirregular to sublinear, irregularly branched, (0.3–) 0.5–1 mm wide. Upper surface yellow-green, flat, shiny at lobe apices, emaculate, smooth, without soredia; lobe margins smooth, black; isidia in thallus centre, simple, globose, then cylindrical or expanding laterally, rarely branching; isidia apices syncorticate and not erumpent. Medulla white. Lower surface flat, shiny, brown to pale brown, darker black-brown at lobe apices; rhizines sparse, simple, short (0.1–0.2 mm), concolorous. Apothecia sessile, to 3 mm wide; disc concave becoming ±flat, pale brown to dark brown; thalline exciple thick, involute, becoming thinner and crenate, isidiate. Ascospores 7–9 × 4–5.5 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, P+ yellow; containing usnic acid, norstictic acid (major), salazinic acid (major), consalazinic acid (minor) and connorstictic acid (minor). | ||
| Rare, endemic, on rock in hinterland areas of W.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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