I suppose it depends on how specific we want to get regarding Xylem as it’s mechanistically sort of analogous to a board game. As the biomes are peaceable tiles featuring attributes - there does exist the possibility that players will want to place incongruous pairings near to each other. My goal is to allow this and have the systems naturally respond to these aberrations. Moreover, like Sap, Xylem isn’t specifically representative of Earth’s ecosystem - so there’s lots of room for surreality.