My lichen identification skills have not progressed. At all. I don't carry around small bottles of sterilising bleach, potassium-hydroxide or iodine, and even if I did I wouldn't know where to start. However I do like lichens, and in particular I like the abstract patterns they create and the way that different species blend and merge on the same square foot of rock/bark/gravestone etc. So here's a few random shots of some coastal rocks and retaining walls at Heddon's Mouth last week.