Phantastes

Phantastes: A Faerie Romance for Men and Women by George MacDonald and edited by Greville MacDonald. The tale starts the day after Anodos' twenty-first birthday. He discovers an ancient fairy lady (whom he learns could be his grandmother) in the desk which he opens with a key that he inherited as a birthright from his late father. After the fairy shows him Fairy Land in a vision, Anodos awakes the next day to find that his room, crafted after natural elements, is taking literal form and transforming into a wood. He discovers that he has been transported to Fairy Land. Anodos then encounters a woman and her daughter in a cottage who warn him about the Ash Tree and the Alder Tree, who seek to destroy him. He is told that the spirits of these trees can leave their tree-hosts and wander throughout Fairy Land. He then explores the world of the fairies, which live in flowers, causing them to glow. The flowers, he is told, die if the fairies leave. He then has a nightmarish encounter with the spirit of the Ash Tree, escapes, and finds rest in the warmth and love of the Beech Tree's spirit.