Picked up and identified by chance by someone at a recent workshop at Vogrie, this allowed me to drag out the photos I took previously, having decided not to go down the route of identifying galls at the time. This is a fascinating, alien little object. The woodland was full of them all over fallen leaves in early November.
It's kind of a curiosity that galls have their own name - is that true for anything else? Birds' nests? Mammal territorial markings? Curious. Anyway, the scientific name is the name of the wasp that causes it, so I'll record it in invertebrates.
Neuroterus quercusbaccarum, Common Spangle Gall