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 nigrocephala Kurok. | ||
| Ann. Tsukuba Bot. Gard. 8: 24 (1989). T: Mt Kosciusko, Charlottes Pass, N.S.W., Australia, elev. c. 1985 m, 3 Dec. 1965, S.Kurokawa 6480; holo: TNS. | ||
| Thallus foliose, adnate to tightly adnate, to 5–10 cm wide. Lobes imbricate, flat, irregular, elongate, irregularly branched, 1–2.5 (–5) mm wide; margins slightly thickened; apices rounded or shallowly notched. Upper surface yellow-green, blackening on older lobes, shiny, emaculate, smooth at margins, becoming rugose in thallus centre, without soredia; lobe margins blackened; isidia dense, in centre of thallus, subglobose, constricted near base, slender or slightly inflated, becoming coralloid, short, usually black-tipped on terminal branchlets; isidia apices syncorticate and intact. Medulla white. Lower surface shiny, pale tan to brown, rarely dark brown in places; rhizines sparse to moderately dense, simple, short, concolorous. Apothecia sessile, 2–5 mm wide; disc concave, shiny, black-brown to dark brown; thalline exciple smooth, entire, undulating, shiny, densely isidiate. Ascospores 6–8 × 4.5–5 µm. Pycnidia rare. Conidia bifusiform, 6–7 × 0.5 µm. CHEMISTRY: cortex K-, UV-; medulla K+ yellow then dark red, C-, KC-, P+ orange; containing usnic acid, salazinic acid and consalazinic acid. | ||
| An alpine species known from N.S.W., A.C.T., Vic. and Tas. Grows on rock. | ||
| Elix (1994z) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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