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As the South East Wales Biodiversity Records Centre has only 400 records of the very easily identifiable Sycamore tarspot (Rhytisma acerinum) in its database, SEWBReC staff have chosen this fungus to be the September species of the month to inspire as many people as possible to find and record this fungus. Using the Welsh records database Aderyn, it’s possible to see where people have recorded Sycamore tarspot and, more importantly for this exercise, where they haven’t. I know this fungus is very common in my local area, yet there are few records.

So, I’m making it my mission during my walks this month to find and record Sycamore tarspot in as many 1-km squares as possible. I got off to a good start on Wednesday, with records logged in four new squares. It will be interesting to see how many more I can get, and to see how many records other people manage to find over the next few weeks. I’m picking the map will change dramatically by 30 September.

220909 sycamore tarspot