Arizona Ash (Fraxinus berlandieriana) is also known as Rio Grande or Mexican ash plus Plumero and Fresno. In our area it is a small tree to 30 ft but is a much larger tree in the Rio Grande Valley of Texas. The bark is gray or reddish with shallow fissures and narrow ridges. The twigs are gray, red, or green with scattered lenticels and small oval raised leaf scars. The leaves are 3-10" long with 3-5 leaflets. The leaflets are 3-4" long, 0.5-1.5" wide, elliptic to lancelate or obovate, acuminate to acute at the apex, cuneate or rounded at base, entire or remotely serrate, dark green and glabrous above, and lighter green and glabrous or pubescent with a few hairs below. The samaras are 1-1.5" long, about 0.5" wide, and with a wing that extends almost to the base of the achene. The wood is light brown, close-grained, light, soft, and with lighter sapwood. Native to the southwestern US and Mexico and widely planted in Louisiana. Persisting with records from Beauregard, East Baton Rouge, Orleans, Ouachita, St. Charles, Tangipahoa, and Vernon parishes but may more widely distributed in the state.