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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 corniculatum (Hoffm.) Minks
  Flora, Jenaische Z. Naturwiss. 35: 353 (1873)
Collema corniculatum Hoffm., Deutschl. Fl. (1796). T: holo: t. 19, fig. 30, Dillenius, Hist. Musc. 143 (1742), OXF; typotype: '...represented by seven specimens in Herbarium Muscorum (OXF!), part of which appears to include the typotype.', n.v., fide J.R.Laundon, Lichenologist 16(3): 211–239 (1984).
  Thallus foliose, subpulvinate, 4–8 cm wide, 70–160 µm thick, olivaceo-leaden grey. Lobes rotund to oblong, ±convolute with ±flared, corniculate apices, 2–6 mm wide; margins entire. Upper surface wrinkled, ±matt, not isidiate; wrinkles ±anastomosing, ±longitudinally orientated, sometimes almost bulloid. Lower surface naked or with minute rhizines and holdfasts. Apothecia laminal, sessile to adnate, 1–1.6 mm wide; disc concave to convex, brown to pale orange-brown or blackened; thalline exciple ±wrinkled, concolorous with thallus or cream. Ascospores ellipsoidal to narrowly ellipsoidal, muriform, 25–40 × 7–12 µm; apices subobtuse to acute. Pycnidia not seen.
  Known in Australia from a single specimen collected on soil at Middle Is., Recherche Archi­pelago, W.A.  
  Verdon (1992b)  

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

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