Medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad 5-lobed leaves are bristle-tipped.

• 美国东部和加拿大东南部的中型至高大的落叶树,外层树皮黑色,内层黄色,用于制革，叶宽大,五裂片,有刚毛。