Wood as heavy as pin oak, forty-four pounds to the cubic foot, strong and hard.
Used for fuel and for a yellow dye made from the inner bark.
Black Jack or Barren Oak.—Often found in company with the black oak on wind-swept, barren plains. Leaf very coarse and crude in both form and texture, having three lobes and a tapering base. These two trees frequently mix or hybridize, and, while not always things of beauty, they grow where other trees cannot live and should be recommended for their hardiness.
Wood even heavier than black oak, but, as the tree is small, it is used chiefly for firewood and the making of charcoal.
Willow Oak.—Foliage resembles the weeping willow. A southern tree, but will grow as far north as New York. Acorns ripen at end of second season, are small, with flat, wide base and shallow cup.
Kernel yellow and bitter.
Wood reddish brown, heavy, and strong.
Tree is popular in the South as an interesting shade tree.
Laurel Oak.—Name derived from the leaves, which are in shape similar to the mountain laurel, but lack its shiny lustre. A tree of the Middle West or Ohio Valley. Acorns, small and half enclosed by the cup; ripen second season.
Wood heavy and hard, checks in drying.