Aomori willow

The Aomori Willow is a type of tree that grows on Aomori in Yamatai. Instead of leaves, the Aomori Willow grows long, translucent vines that trap light, transferring the light energy to chloroplasts within the branches themselves, similar to optical fibres. Bioluminescent micro-organisms exist within the plant's branches, and through a reverse process of the collection of sunlight the Aomori Willow is able to give off light at night. The vines themselves also excrete a sweet sap and are edible, eaten by several of Aomori's organisms as well as the human inhabitants.