Any of numerous American oaks having 4 stamens in each floret,acorns requiring two years to mature and leaf veins usually extending beyond the leaf margin to form points or bristles.

• 美国众多栎树中的任意一种,每朵花具四个雄蕊,橡子两年成熟,叶脉通常伸到叶边形成刚毛。