2. Leaf, × 1/3.
3. Flowering branchlet, × 1/2.
4. Staminate flower, enlarged.
5. Pistillate flower, enlarged.
6. Fruit, × 1.
FAGACEAE
Bur Oak
Quercus macrocarpa Michx.
HABIT.—A large tree 60-80 feet high, with a trunk 2-4 feet in diameter; great, spreading branches form a broad, rugged crown.