The displacement-activated spore hub drive, commonly shortened to spore drive or s-drive, was an organic propulsion system the Federation experimented with during the 2240s and 2250s. The technology used mycelium spores harvested from Prototaxites stellaviatori to jump or leap across the mycelial network. During such jumps, the ships were not in normal space but in the mycelial plane. (DIS: "Context Is for Kings", "Choose Your Pain")