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 trirosea Elix | ||
| Mycotaxon 47: 124 (1993). T: Gudgenby River Gorge, 4.5 km south of Tharwa, A.C.T., 35°34'S, 149°04'E, 620 m, 12 Apr. 1982, J.A.Elix 10165; holo: CANB; iso: CANB, MEL. | ||
| Thallus foliose, very loosely adnate, to 6–9 cm wide. Lobes moderately imbricate, flat, linear-elongate, subdichotomously branched, divaricate in places, becoming suberect and exposing lower surface, 0.5–1 mm wide. Upper surface yellow to yellow-green, blackening with age, shiny, emaculate, smooth, lacking soredia and isidia; lobe margins black. Medulla white. Lower surface rugose, jet black; rhizines absent or very sparse, simple, robust, short. Apothecia sessile, 1–10 mm wide; disc concave, chestnut-brown, darkening; thalline exciple entire, thick, involute, becoming subentire and thin. Ascospores 6–10 × 3.5–5.5 µm. Pycnidia numerous. Conidia bifusiform, 5–7 × 1 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then pale reddish, C-, KC-, P-; containing usnic acid, hypostictic acid (major), hyposalazinic acid (minor) and hypoconstictic acid (minor). | ||
| Scattered, endemic, on exposed, acidic rock in areas of moderate rainfall in coastal and hinterland areas of south-eastern Australia (N.S.W. and A.C.T.). | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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