The leaves of Bigleaf maple are lobed with 5 to 7 lobes. The leaves are up to 40 cm (15.75 in) in diameter. The petiole is long and red. The leaf margin is smooth.
The yellowish flowers hang on up to 25 cm (9.8 in) long panicles.
The fruit is a samara with two winged nutlets. The samara are arranged at right angles.
The branches are glossy dark red.
single tree (good shade provider), forest tree (USA)