Dryads

Dryads were spirits of trees. They were able to assume physical bodies identical to human form and the same size as normal humans, and they could go in and out of their trees. Male dryads lived in Oak, Elm, Holly, and Rowan trees, while female dryads lived in Beech, Silver Birch, Larch, and Willow trees. Each individual dryad was spiritually tied to one tree and if that tree was cut down or destroyed, the dryad tied to it would fall down, die, and then dissappear into thin air.