The tortieboom, or turtle tree, grows in the wettest, darkest tropical forests. Its fruits look like large oranges. When ripe, they split open, and a baby turtle emerges. It hurries down the tree seeking the safety of a warm puddle. Adult turtles give birth to egg-like seeds for new turtle trees.
In drier, sunnier climes, the tree flourishes, but economises its resources by omitting its turtle phase, bearing fruits that contain its own seeds. These are the orange trees that we all know.
This is why Buddhists and vegans are forbidden to eat oranges, for they are animals, not plants.