The Sand Pine (P. clausa, Sarg.) has a striking habit of swallowing its persistent woody cones by the growth of the stems that bear them. Chopping frequently reveals cones in the solid wood-a peculiar kind of modified knot. The tree is unimportant to the lumber trade, being inferior in quality and scant in quantity. It grows near the coast on either side of northern Florida and west into Alabama. It is used locally as masts for small vessels.