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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 fallax Müll.Arg.
  Flora 65: 292 (1882)
T: Java, Junghuhn et al.; holo: not located.
  Thallus foliose, ±pulvinate, rarely polyphyllous, 3–8 cm wide, 60–180 µm thick, leaden grey. Lobes ±rotund, ±concave, occasionally anastomosing, 1.5–4 µm wide; margins entire or lobulate, undulate. Upper surface matt, ±coarsely wrinkled, lobulate or with accessory lobes, not isidiate. Lower surface naked or with scattered small rhizines or holdfasts. Apothecia laminal, sessile, 2.5–6 mm wide; disc concave to convex, orange-brown; thalline exciple wrinkled or tuberculose, incurved, crenate, finally becoming ±smooth and densely enveloped by large undulate lobules or accessory lobes. Ascospores ellipsoidal to broadly ellipsoidal, ±muriform, 28–45 × 10–18 µm; apices acute. Pycnidia ±submarginal. Conidia 2–3 µm long; apices not swollen.
  Inhabits eucalypt woodlands and forests or rainforest margins in north-eastern Qld, from sea level to 1090 m altitude, usually on bark at the bases of trees or on shaded rocks. Also in Papua New Guinea, Indonesia and India.  
  Verdon (1992b)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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