According to botanical reference library files, mayope is the hardest known wood in the entire Confederation. It is a tropical hardwood and the trees exist on only one planet — Lalonde. The wood is black in colour, extremely dense and as hard as metal. In the jungle continent of Amarisk, paddleboats (such as the Swithland) that ply the river Juliffe and its tributaries, have hulls made from mayope planks. Houses are also constructed of mayope wood, which becomes a lighter, greyish colour when it weathers.