The shell has 3 to 5 large bumps on the posterior half surrounded by smaller bumps. The anterior is usually smooth and free of bumps. Nacre is white. Compare to other Quadrula species. The shell is thick and elongate.
Color is light to dark brown with green markings.
There is a pronounced lumpy ridge on the posterior end. Nacre is white. Compare to Washboard. Color is yellow or brown to dark red-brown and black. The posterior end has a furrow or depression.