Swamp White Oak
Native to (or naturalized in) Oregon:
- Deciduous tree, medium-sized, to 75 ft (23 m) tall, pyramidal when young, open crown, rounded, short trunk; bark light grayish-brown, scaly, fissured with flat ridges with age. Leaves alternate, simple, 12-17 cm long, widest above the middle, tapering to a wedge-shape base, rounded shallow lobes, glossy green above, gray or almost white and pubescent below. Fruit (acorns) 20-30 mm long, solitary or in pairs, stalks 2-10 mm long, cup covered with swollen scales, enclose a third or half of the nut.
- Sun to part shade, best in moist, well-drained, acid soils, reportedly has some tolerance to drought and urban conditions.
- Hardy to USDA Zone 4 Native range from Quebec, Pennsylvania, west to Wisconsin, south to Georgia and Arkansas.
- bicolor: two-colored, a reference to the contrast between the upper and lower leaf surfaces.
- Oregon State Univ. campus: west of Market Place West.