The Dryad Picture
Dryads are tree nymphs in Greek mythology. In Greek drys signifies 'oak,' from an Indo-European root *derew(o)- 'tree' or 'wood'. Thus Dryads are specifically the nymphs of oak trees, though the term has come to be used for all tree nymphs in general. They were normally considered to be very shy creatures, except around the goddess Artemis, who was known to be a friend to most nymphs.