singleleaf ash Oleaceae Fraxinus
anomala Torr. ex S. Watson
Leaf: Opposite, simple or sometimes tri-foliate, oval to nearly round, 1 1/2 to 2 inches long and nearly as wide, entire or slightly wavy toothed, a bit leathery, dark green above, paler below.
Flower: Species is monoecious; small and inconspicuous, pale yellow-green in small clusters on last years growth, appear before or with the leaves.
Fruit: Single-winged, straight papery samara in clusters; 3/4 to 1 inch long, 1/2 inch wide, wing extends to the seed base, ripen in mid to late summer.
Twig: Stout, four-angled, lined or winged, light orange-brown, with darker, scruffy buds; leaf scars crescent-shaped and slightly raised.
Bark: Initially smooth and light brown; later splitting into dark brown, narrow scaly, rough ridges.
Form: Small tree or shrub to 20 feet with short trunk and an upright form and very often with multiple trunks.
Looks like: Arizona ash