Monday 23 May 2022

Parmelina pastillifera on the Sea Wall beside the Thames (north side) just downstream of Blackfriars Railway Bridge

First seen a few months ago we finally caught up with it again. Not common in the South-East apparently. But under-recorded perhaps?

We had been anxious about identification but John Skinner, Lichen' Recorder for the London Natural History Society, sent us a specimen. 

Among lots of dark smudges we were able to find some of the shiny bun-shaped isidia. There were also some light-coloured shiny bun-shaped isidia which we assume darken over time. The lobes are brownish at the margins and black underneath. 



The record will be submitted to the British Lichen Society

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