Longleaf pine’s geographic range is more restricted than that of loblolly and shortleaf, but larger than the range of Cuban pine. Longleaf occupies a belt from Virginia to Texas, following the tertiary sandy formation pretty closely. The belt seldom extends from the coast inland more than 125 miles. The tree runs south in Florida to Tampa bay. It disappears as it approaches the Mississippi, but reappears west of that river in Louisiana and Texas. Its western limit is near Trinity river, and its northern in that region is near the boundary between Louisiana and Arkansas. Longleaf attains a height of from sixty to ninety feet, but a few trees reach 130. The diameters of mature trunks range from one foot to three, usually less than two. The leaves grow three in a bundle, and fall at the end of the second year. They are arranged in thick, broom-like bunches on the ends of the twigs. It is a tree of slow growth compared with other pines of the region. Its characteristic narrow annual rings are usually sufficient to distinguish its logs and lumber from those of other southern yellow pines. Its thin sapwood likewise assists in identification. The proportionately high percentage of heartwood in longleaf pine makes it possible to saw lumber which shows little or no sapwood. It is difficult to do that with other southern pines. The wood is heavy, exceedingly hard for pine, very strong, tough, compact, durable, resinous, resin passages few, not conspicuous; medullary rays numerous, not conspicuous; color, light red or orange, the thin sapwood nearly white. The annual rings contain a large proportion of dark colored summerwood, which accounts for the great strength of longleaf pine timber. The contrast in color between the springwood and the summerwood is the basis of the figure of this pine which gives it much of its value as an interior finish material, including doors. The hardness of the summerwood provides the wearing qualities of flooring and paving blocks. The coloring matter in the body of the wood protects it against decay for a longer period than most other pines. This, in connection with its hardness and strength, gives it high standing for railroad ties, bridges, trestles, and other structures exposed to weather. Longleaf pine is as widely used as any softwood in this country. It serves with hardwoods for a number of purposes. It has been a timber of commerce since an early period, and was exported from the south Atlantic coast long before the Revolutionary war; but it was later than that when it came into keen competition with the Riga pine of northern Europe. It has since held its own in the European markets, and its trade has extended to many other foreign countries, particularly to the republics of South and Central America, Mexico, and the West Indies.