Quercus Macrocarpa, also known as Bur Oak, is a relatively slow growing large tree with a round crown. The thick bark is grooved with elongated plates and the large, long oval leaves are variably lobed. Leaves are glossy, dark green and approximately 15 to 25 cm long. The peculiar cupule hangs like a sort of fringe around the acorns and the size of the fruit depends on the area of origin. This is a particularly hardy, imposing park tree.