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 | ||
| Hypotrachyna lividescens (Kurok.) Hale | ||
| Phytologia 28: 341 (1974); Parmelia lividescens Kurok. in M.E.Hale & S.Kurokawa, Contr. U.S. Natl Herb. 36: 181 (1964). T: Polela Forest, Polela, Natal, South Africa, 10 Nov. 1953, O.Almborn 9490; holo: LD; iso: US, n.v., fide M.E.Hale & S.Kurokawa, loc. cit. | ||
| Thallus adnate, to 5–10 cm wide. Lobes separate at thallus circumference, flat, sublinear, dichotomously branched, 1.5–3 mm wide; margins subcrenate. Upper surface whitish grey to grey, flat, shiny on younger lobes, dull and irregularly cracked on older lobes, emaculate, without pustules and isidia; soralia mostly subterminal, orbicular, capitate. Medulla white. Lower surface sparsely to moderately rhizinate; rhizines moderately dichotomously branched. Apothecia not seen. [According to Hale & Kurokawa (1964) apothecia are rare, sessile, 2–3 mm wide; disc radially split, dark brown; thalline exciple sorediate. Ascospores 9–11 × 5–7 µm.] Pycnidia not seen. CHEMISTRY: cortex K+ yellow, UV-; medulla K-, C+ red, KC+ red, P-, UV-; containing atranorin, chloroatranorin and olivetoric acid (major). | ||
| Rare in coastal forests of eastern Australia (N.S.W.); also occurs in South Africa. Grows on bark. | ||
| Elix (1994h) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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