willow oak Fagaceae Quercus phellos

Leaf:Alternate, simple, 2 to 5 inches long, linear or lanceolate in shape (willow-like) with an entire margin and a bristle tip.
Flower:Species is monoecious; males borne on slender yellow-green catkins; females borne on very short axilliary spikes, both appear very early with the leaves.
Fruit:Acorns are very small, 1/4 to 1/2 inch across, nearly round and yellow-green, turning tan when older, caps are thin, saucer-like and cover only 1/4 of acorn with thin, tomentose, appressed scales.
Twig:Slender, hairless, olive-brown in color when young; multiple terminal buds are very small, reddish brown and sharp-pointed.
Bark:On young stems, smooth, gray and tight; later becoming darker and forming irregular rough ridges and furrows.
Form:A medium sized tree up to 80 feet tall that forms a dense oblong crown when open grown; lower branches do not readily self-prune.

leaf flower fruit twig bark form map