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 mannumensis (Elix) Elix & J.Johnst. | ||
| in J.A.Elix, J.Johnston & P.M.Armstrong, Bull. Brit. Mus. (Nat. Hist.), Bot. 15: 283 (1986); Parmelia mannumensis Elix, Austral. J. Bot. 29: 359 (1981). T: along Gorge Ck, west of Mannum, S.A., 29 Dec. 1977, J.A.Elix 4215; holo: MEL. | ||
| Thallus foliose, loosely adnate, to 7–10 cm wide. Lobes densely imbricate, ±forming a rather thick mat, flat, sublinear-elongate, dichotomously to irregularly branched, 0.5–1.5 (–2) mm wide. Upper surface greenish yellow, shiny, distinctly to effigurately maculate, smooth, lacking soredia and isidia; lobes often black-margined particularly towards apices. Medulla white. Lower surface rugulose or not, black; rhizines sparse to moderately dense, simple, robust, black. Apothecia subpedicellate, 2–5 mm wide; disc concave, dark brown; thalline exciple maculate. Ascospores 6–8 × 4–5 µm. Pycnidia common. Conidia bifusiform, 5–6 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K-, C-, KC-, P-; containing usnic acid, diffractaic acid (major), barbatic acid (minor), 4-O-demethylbarbatic acid (trace), obtusatic acid (trace) and norobtusatic acid (trace). | ||
| Very rare, endemic, on exposed rock in temperate to subarid areas of S.A., N.S.W. and Tas. | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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