common filbert Betulaceae Corylus avellana

Leaf:Alternate, simple, with a doubly serrated margin, broadly oval with a heart-shaped or rounded base, dark green and slightly pubescent above, pale pubescent below, 2 to 5 inches in length, petiole with stiff, glandular hairs.
Flower:Species is monoecious; males are light brown 2 to 3 inch catkins, usually in clusters of threes near branch tips, opening before leaves; females are inconspicuous with only bright red stigma and styles protruding from the otherwise gray-brown buds, appearing as short, thin, red threads, early spring.
Fruit:Edible brown nuts 3/4 inch diameter partially enclosed in a hairy, leaf-like husk with ragged edges; initially green, ripening to a brown in late summer.
Twig:Slender, zigzag, light brown, with numerous stiff, glandular hairs; buds blunt, rounded, with few scales, green changing to tan with brown scales wrapping the base of the bud.
Bark:Light grayish brown and smooth, later develops a mild criss-cross netted pattern.
Form:A large multi-stemmed shrub or small tree to 20 feet in height.

leaf flower fruit twig bark form map