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 | ||
| Strigula prasina Müll.Arg. | ||
Flora 68: 343 (1885) Raciborskiella prasina (Müll.Arg.) R.Sant., Symb. Bot. Upsal. 12(1): 197 (1952). T: Apiahí, São Paulo, Brazil, J.I.Puiggari 385b; lecto: G n.v., fide R.Santesson, loc. cit. |
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| Thallus usually hypophyllous, occasionally epiphyllous, subcuticular, rounded to irregular, 5–20 mm wide, 20–40 µm thick, pale greenish grey, becoming dull pale bluish grey, smooth to radially furrowed; margin crenulate to shallowly lobate; photobiont Cephaleuros; prothallus not apparent. Perithecia almost superficial, convex to hemispherical, 0.25–0.45 (–0.50) mm diam., not overgrown by the thallus, glossy black, the base sometimes spreading laterally. Perithecial apex rounded; ostiole inconspicuous or in a shallow depression. Involucrellum black, carbonaceous, extending to exciple base level, 20–30 µm thick. Exciple hyaline to pale brown, 8–15 µm thick. Centrum depressed-ovate, 0.15–0.25 mm diam. Paraphyses richly branched and anastomosing, especially near their apices. Asci elongate-cylindrical, 60–80 × 7–9 µm. Ascospores uniseriate or irregularly biseriate in the ascus, 1-septate, elongate-ellipsoidal to short-fusiform, scarcely constricted at the septum, 12–18 × 4–6 µm; cells not separating. Conidiomata: 1) hemispherical, black, 0.08–0.15 mm diam., containing simple bacilliform macroconidia 10–15 × 3–4 µm; 2) convex, black and very numerous, 0.05–0.08 mm diam., containing simple fusiform microconidia 4–5 × 1–2 µm. | ||
| Occurs on the leaves of rainforest trees in north-eastern Qld; pantropical. | ||
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Photo: R. Lücking |
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| McCarthy (2009b) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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