Lecanoraceae Lecanora sinuosa Lecanora sinuosa is recorded from Netherlands, extent of distribution in British Isles uncertain. Mainly found on exposed, well-lit Quercus robur. Chemical results: K+ yellow, C-, P-, UV- Thick, verrucose, grey or whitish-grey thallus covered by raised warts. The pale to medium brown apothecia have thick, raised, +/- incurved margins. Hymenium +/- with tiny brown crystals, hypothecium with angular packets of crystals, 15-70 µm large. Spores 13-17 x 7.5-9 µm. Belongs to the Lecanora subfusca group.

Lecanora sinuosa
Brands Bay, Dorset. January 2013