Northern Red Oak is a fast growing species; its leaves are lobed with distinct red-orange bristle tips. Acorns are large and covered by flattened saucer-like cup. Twig pith is star-shaped in cross-section. The largest North American Red Oak is located in Monroe County, NY and has a height of 80 feet with a diameter at breast height of 405 inches. The National Big Tree Registry estimates this tree provides $3,261 of environmental services each year.