Quercus rubra, commonly called red oak. This deciduous tree grows straight and tall, to 28 m, with a trunk of up to 50–100 cm diameter. Open-grown trees do not get as tall, but can develop a stouter trunk, up to 2 m in diameter. It has stout branches growing at right angles to the stem, forming a narrow round-topped head. It grows rapidly and is tolerant of many soils and varied situations, although it prefers the glacial drift and well-drained borders of streams.