The mushroom's shape and lateral stem make it look suitable for woodland spirits, the dryads of Greek mythology, to ride. I've found plenty of dryad's saddle in the woods, but I'm still looking for the nymph!
The entire mushroom smells like watermelon rind, something no other species (except for watermelons) can do.
Dryad's saddle grows on living and dead hardwoods, mostly in Eastern North America, but occasionally in the west. You can find it in the spring and fall, often year after year in the same location, recurring until it depletes its food source.
The mature mushroom is much too leathery and bitter to eat, but any part of the immature cap that you can cut with your fingernail is edible.