Quercus macrocarpa (Michx.)
Fagaceae (Beech) Family
Bur Oak is also known as Blue Oak and Mossycup Oak. The tree has very large acorns, a stout trunk, and broad, rounded, open crown of stout, spreading branches. The branches are often crooked. Is is also not uncommon to see it as a shrub in the understory of larger trees. Its preferred habitat is dry uplands on limestone and gravelly ridges, sandy plains, and loamy slopes to moist flood plains or streams. Distribution in the Escambia region is occasional.
The leaves are 4 to 10 inches long and 2 to 5 inches wide. The shape is obovate, broadest beyond the middle. The lower half os deeply divided into 2 or 3 lobes on each side of the primary vein. The upper half is usually divided into 5 or 7 shallow or rounded lobes. The color is dark green and slightly shiny above, gray-green below with fine hairs. The leaves turn yellow or brown in autumn.
Fruit is a large acorn broadly elliptical in outline enclosed by large deep cup with hairy green scales. The upper scales are very long pointed and form a fringe-like border.