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 | ||
| Leptogium marginellum (Sw.) S.F.Gray | ||
| Nat. Arr. Brit. Pl. 1: 401 (1821) Lichen marginellus Sw., Prodr. 147 (1788). T: Jamaica, O.P.Swartz; n.v. |
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| Thallus foliose, closely or loosely adnate, irregular or subradiate, 2–8 cm wide, 50–220 µm thick, leaden grey or browned. Lobes orbicular, 1.5–7 mm wide, ±flat; margins often ascending, undulate, entire or slightly erose; surfaces ±strongly wrinkled; usually not isidiate. Lower surface naked or with small rhizines. Apothecia usually marginal, common but often aborted, sessile to adnate, 0.1–1 mm wide; thalline exciple concolorous with thallus or pale cream ±densely isidiate, with ±clavate to squamuliform isidia; disc concave to flat, pale brown to reddish brown. Ascospores ellipsoidal, ±muriform, 15–26 × 9–12 µm; apices acute. Pycnidia not seen. | ||
| Distributed from north-eastern Qld to Richmond R. in N.S.W., growing on bark. Common in tropical and subtropical America and recorded from the Philippines. | ||
| Verdon (1992b) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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