![]() ![]() ![]() They share characteristics such as acorns maturing during the first autumn after flowering (so, no immature acorns present on the tree during winter) leaves often having rounded lobes a complete lack of bristle-tips along the edge of the leaf blade the axils of major veins on the undersurface of leaves without noticeable tufts of hairs and bark light to medium gray, splitting into loose or somewhat persistent ridges, plates, blocks, or strips. ![]() White oak is the banner species for a large subset of native oaks, called the "white oak group." (Our other large subgroup is the "red oak group" or "black oak group.") Missouri oaks in the white oak group include overcup, swamp chestnut, chinkapin, dwarf chestnut, and post oaks. With 90-plus North American species and about 435 worldwide, Quercus is the Northern Hemisphere’s largest tree genus, made up mostly of trees that are very large and very long-lived, two factors. Similar species: More than 20 species of oaks live in Missouri, not counting cultivated types that never escape. Acorns ripen in autumn of the first year. Male and female flowers are on the same tree male flowers in drooping catkins, female flowers small and in leaf axils.įruits September–October, acorn solitary or in pairs nut light brown, shiny, widest near the base or middle, tapering to a round tip ¾–1 inch long cup covering up to ¼ of the nut, bowl-shaped to saucer-shaped, light brown scales numerous, surface warty or corky, flattened, knobby. Eight oak species are in the white oak group and 12 are in the red oak group. Twenty species of oak trees are native to Tennessee. Twigs are slender to stout, green to reddish-green, and hairy when young, turning red-brown to ash gray and smooth with age.įlowering is in April–May. A year of heavy acorn production may use up much of a tree’s stored nitrogen, and few acorns may be produced the following year while the tree’s nutrient stores are replenished. In fall, color can range from uninteresting browns to beautiful claret reds.īark is light gray, with shallow grooves and flat, loose ridges large limbs and branches scaly. Leaves are alternate, simple, 5–9 inches long, 2–4 inches wide margin entire, with 6–10 lobes lobes rounded at the tip upper surface bright green, smooth, often shiny lower surface whitened, smooth (without hairs). White oak is a large tree with a long, straight trunk and a broad, rounded crown. ![]()
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