Images of British Lichens
Opegrapha pertusariicola Coppins & P.James
Thallus parasitic, non-lichenised, immersed in the host tissue; apothecia black, lirellate, tiny, oval, single or in clusters produced on the surface of the host, asci 4-spored, ascospores (5-)6-septate, 21-28 × 4.5-6 µm (dimensions from Pentecost & James, in Smith et al., 2009). Host-specific on Pertusaria leioplaca, northern and western, on Hazel (Corylus) in old woodland.
Refs: Coppins & James (1979), Lichenologist 11: 164; Smith et al. (2009), 642; Purvis et al. (1992), 411; Hawksworth (1983), 17.
|On thallus of Pertusaria leioplaca on Hazel (Corylus avellana) in ancient woodland, Logie, Morayshire, August 2010 (BLS meeting)|
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