It was news to me that alder trees even have a tongue to poke out of their cones !
After checking it out online it seems to be ‘Alder tongue gall’. It’s caused by fungal pathogen that causes distortion of the female catkin. Couldn’t establish if it matters to the trees health or not.
No riding today , just so much rain.
TDF and Wimbledon TV eve again , all good stuff.