Giant chinquapin bark is thin, smooth, and dark gray when young.
Giant chinquapin is monecious.
Giant chinquapin regenerates both sexually and vegetatively. Significant seedling establishment is likely to occur only during a series of abnormally moist years on more xeric exposures. Tree and shrub forms occupy distinctly different habitats. In the Coast Ranges and Klamath Mountains of California, giant chinquapin trees are generally restricted to cool north slopes or moist canyon bottoms.