Parmotrema perlatum
Description
A relatively large and leafy lichen. It is pearly grey when dry, but greener when damp.
Identification difficulty

Habitat
Usually on tree trunks but sometimes on rocks.
When to see it
All year round.
UK Status
Widespread, common in much of western and southern Britain; until recently largely absent from central and eastern England as a result of sulphur dioxide pollution, but now rapidly re colonising these areas as levels have dropped.
VC55 Status
Probably increasing in Leicestershire and Rutland.
Leicestershire & Rutland Map
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015