The bigleaf maple (Acer macrophyllum) belongs to Aceraceae (the Maple family). It is a tall deciduous tree that is native to western North America, mostly near the Pacific coast, from southernmost Alaska to southern California. This tree grows in mountainous regions, and it can reach 15-20 m in height. The leaves are largest of any maple, typically 15-30 cm across, with five deeply incised palmate lobes. The inconspicuous greenish-yellow flowers bloom in pendulous racemes in spring. The fruit is a paired winged samara.