Acer mono (Latin name:. Acer mono Maxim), also known as Acer mono, Pentagon maple, stained wood, for Aceraceae pepper tree is deciduous trees. Up to 20 meters high. Diameter up to 1 meter. Bark gray or gray-brown; single leaf, broadly oblong, dark green leaves above, hairless, pale green below, petiole thin, small flowers, often consisting of the top students in corymbs: yellowish green sepals, petals yellow-white, smooth and hairless ovary, Samara nearly oval. Fruit period from May to September. The species is widely distributed, hard wood, delicate, shiny, for furniture, musical instruments, equipment, vehicles, construction joinery timber. Northern autumn foliage important species, beautiful leaf, red leaves, autumn turned into orange or red, do landscaping courtyard trees, forest trees and landscape trees.