Under the willow tree at sunset

But none was more dangerous than the Great Willow: his heart was rotten, but his strength was green; and he was cunning, and a master of winds, and his song and thought ran through the woods on both sides of the river. His grey thirsty spirit drew power out of the earth and spread like fine root-threads in the ground, and invisible twig fingers in the air, till it had under its dominion nearly all the trees of the Forest from the Hedge to the Downs.