Arizona alder Betulaceae Alnus oblongifolia
Leaf:Alternate, simple, ovate to oblong, V-shaped base, 2 to 3 1/2 inches long, doubly serrate, dark green above, paler with a few scattered hairs below particularly in leaf axils.
Flower:Species is monoecious; males are yellow-green elongated, catkins about 2 to 3 inches long, in hanging clusters; females are very small (1/4 inch) reddish green appearing in early spring.
Fruit:Cone-like, woody, 1/2 inch long, green but turning reddish brown when ripe, contains numerous small winged seeds, ripen in early fall and persist through the winter.
Twig:Slender, yellow brown with fine fuzz when young; buds are stalked, red and long up to 1/2 inch.
Bark:Gray-brown and smooth with numerous short lenticels when young, later developing rectangular, flat narrow plates a bit scaly.
Form:An upright medium sized tree with a narrow crown reaching up to 70 feet in height.