The Huffington Post has produced a list of the ‘9 Best Trees in Literature’, and have featured (albeit incorrectly) J.R.R. Tolkien’s Ents.
Other books featured on the list include Harry Potter and the Chamber of Secrets, To Kill a Mockingbird and The Bible. About Ents, The Huffington Post says:
Did J.R.R. Tolkien inspire Grandmother Willow in Disney’s Pocahontas? It’s entirely possible, given the importance placed on Ents, talking tree-like creatures, in his Lord of the Rings series. Acting as guardians of the forest, the Ents are headed by a leader named Treebeard, who purports to be the oldest creature in Middle Earth (sic).