Manna trees are one of the most beloved of engineered and domesticated plants. One of the many children of celebrated bio-hacker Gloria de la Poer, whose gift of manna trees to humanity offset some of her infamy. Manna trees are designed to be of use to humanity in as many ways as possible. They bear two types of fruit (one highly nutritious and one containing water), their inner bark, like willow bark, produces aspirin, their leaves can be easily made into paper or fiber, their metabolisms sequester airborne pollutants, and their wood is hard and resistant to rot.
After the destruction of Earth, few manna trees remain. Pre-Fall, only Mars and Titan hosted living trees. Genetic material and information from manna trees was briefly one of the most valuable commodities on the planet. Currently, groves of manna trees can be found growing on Mars, Luna, Titan and Ganymede, but most habitats capable of supporting tree-growth will keep at least one.
Inspired by the trees of the same name from Paul McAuley's The Quiet War.