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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
Lepraria eburnea J.R.Laundon

Lichenologist 24: 331 (1992)

T: All Saints churchyard, Fulham, London, Great Britain, in shade on moss, brick, and mortar on vertical surface of brick wall on E side of churchyard, 30 June 1987, J.R.Laundon 3185 holo: BM.

  Thallus in the uppermost bark layers, greenish white, effuse, finely granular. Prothalline lines distinct, dark red-brown. Photobiont in short chains; cells ellipsoidal, 10–16 × 7–10 μm. Ascomata dispersed, rounded, stellate or irregular in shape, usually not distinctly elongate, 0.24–1.80 mm wide, ±level with the thallus or slightly convex, with a dense crimson pruina. Epihymenium 20–40 μm thick, densely inspersed with crimson and, to a lesser extent, colourless crystals. Hymenium 40–50 μm thick, less densely inspersed with crimson crystals than the epihymenium. Hypothecium colourless, 40–50 μm thick. Asci dispersed, globose to subglobose, 4–8-spored. Ascospores in 3 or 4 rows, ellipsoidal to obovate, with 3 transverse septa, 22–38 × 11–16 μm, not constricted at the septa; polar cells often slightly smaller.
CHEMISTRY: Thallus K–, C–, KC+ reddish orange, P+ yellow-orange, UV–; containing alectorialic acid (major), barbatolic acid (minor), ±protocetraric acid (minor).
  Rare in N.S.W., Vic. and Tas., on mosses and branches in wet forest habitats. Also known from Europe and North America.  
  Elix (2009i)  

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

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