Dryad

Dryads (also can be refered as "Wood Nymphs", "Wood Gods", "Wood Goddesses", "Hamadryads", "Tree People", and "Silvans") are spirits of trees. They are 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 disappear into thin air.