Hamadryads (Ἁμαδρυάδες) are Greek mythological beings that live in trees. They are a specific species of dryad, which are a particular type of nymph. Hamadryads are born bonded to a specific tree. If their tree died, the hamadryad associated with it died as well. For that reason, dryads and the gods punished any mortals who harmed trees.

Balanos is the nymph of the Oak tree, pictured here with a nest from her tree as a garland.