Lichen Field Photos
Lichens on a tree by Kielder Water, Northumberland, UK (October, 2010).
Crustose lichens on a rock face at Cragside, Rothbury, Northumberland, UK (October, 2010).
And a close-up.

A lichen weathering crust atop a restored marble-work. Taken in Ephesus, Turkey (October, 2008).

Close-up of weathering crust.

Another close-up with a credit card sized card for scale.
Nakuru National Park, north west Kenya
Dry stone wall, The Mendips, England
Dry Stone wall, The Mendips, England
Roman Baths, Bath, England
Yorkshire, England
Yorkshire, England
Yorkshire, England
I hope that this has encouraged you to get out there and see what lichens you can find!
Michael Crouch, School of Environmental Sciences, UEA. Last updated: January 2011