dryads
Dryads are tree nymphs, female spirits of the forest in ancient Greek mythology. They are part of the broader group of nymphs and are closely associated with trees and groves. The name is often used for nymphs bound to a particular tree, while the subtype hamadryad specifically denotes a dryad whose life is tied to the life of her tree; if the tree dies, the dryad dies.
Dryads are typically described as beautiful, shy, and protective of their groves. They are more commonly imagined
The concept appears in Greek poetry and mythology, and the Romans adopted and adapted it as well.
In modern fantasy, dryads are a common figure, usually portrayed as sapient tree-spirits or guardians of forests.