We made it not a few feet out of the car when our Parisan guide pulled us aside to show us the trunk of a sponge-fleshed tree. Within the pores of the tree we could see what looked like feathers waving in the breeze.
Our guide called it out as Feather Fungus, and warned us to never touch anything that looked like those feathers. Found out that they can infect people, using skin as a grow bed for themselves. Seriously... F this planet.