Black willow and other species of Salix together comprise a majority of the stocking. Cottonwood is the chief associate, particularly in the early stages, but green ash, sycamore, pecan, persimmon, waterlocust, American elm, baldcypress, red maple, sugarberry, box-elder, and in some areas, silver maple are invaders preceding the next successional stage.
Krinard, R. M. 1980. Black Willow. In: Eyre, F. H., ed. Forest cover types of the United States and Canada. Washington, D.C.: Society of American Foresters. p. 66.