I found this interesting thing on the back of a fern leaf today. I thought it was a lichen but someone tells me he thinks it is a gall. It’s very small, about 8mm across the widest part from point to point. Later, a third person said he thinks it is a fungal crustation on the corpse of an insect. Since I found what looked like an insect leg attached to the Thing, I’m going with that last explanation.