Species Description: Walnut hardwood flooring is an American standard well known for its dark brown heartwood, often featuring a purplish cast and darker streaks. So distinctive is the color of the Walnut hardwood that the word "Walnut" itself has come to refer to this deep, rich, and highly sought after chocolate brown. One of the harder domestic species, a Walnut hardwood floor also sports a warming tone that, when combined with its rich brown tones, creates an air of tradition and classic elegance that lends itself to both modern and rustic decor. Softer than most exotic species, Walnut offers more character and deeper color than just about any other specie available.