Species of very large deciduous trees native to northwestern North America; planted elsewhere as an ornamental. In some classifications, a subspecies of Populus balsamifera. Noted as the first tree species for which the genome was sequenced. Used for timber and for extracts from the fragrant buds for use in perfume, medicines, and cosmetics. Native Americans of the Pacific Northwest used the inner bark as food and medicine, the anti-inflammatory, salicin, content making it useful for treating wounds and other purposes. The wood, roots, and bark were used for firewood, canoes, rope making, fish traps, baskets, and structures. The gum-like sap was used as glue and waterproofing.
