- Wikipedia: Burr Oak
The Quercus macrocarpa or Bur Oak, sometimes spelled Burr Oak, is a species of oak in the white oak section Quercus sect. Quercus, native to North America in the eastern and midwestern United States and south-central Canada. This plant is also called Mossycup oak and Mossycup white oak.
- Quercus Macrocarpa, USDA Plants database