Q: What kind of tree is this? It puts out hundreds of seeds.
A: I am glad you brought in a clipping of the tree with the seeds as it made it much easier to identify. I believe you probably have a Chinese Elm. A fast-growing, deciduous or evergreen tree, Chinese Elm forms a graceful, upright, rounded canopy of long, arching, and somewhat weeping branches which are clothed with two to three-inch-long, shiny, dark green, leathery leaves. Here, in the southern extent of its range the tree remains evergreen. The bark naturally sheds which many people often mistake for disease, but can provide an interesting pattern on the trunk making it more attractive. Chinese Elm can reach 80 feet in height but is more often seen at 40 to 50 feet, making it an ideal shade, specimen, street or parking lot tree. The root system is comprised of several very large-diameter roots which can grow to great distances from the trunk. These are usually located fairly close to the surface of the soil and can occasionally lift sidewalks. They can also get into sewer lines causing damage, but they are usually not a serious problem. Consider planting far away from sidewalks and drain fields. http://edis.ifas.ufl.edu/st652