The Ocala National Forest is in the southeastern conifer forests and the Florida sand pine scrub ecoregions. Dry, sandy areas support Florida longleaf pine sandhills and Florida peninsula inland scrub. Longleaf pine sandhills are woodlands dominated by longleaf pine ("Pinus palustris"). Inland scrub consists of sand pines ("Pinus clausa") growing amid shrublands of evergreen oaks. Both of these pine communities are sustained by frequent fires. The Ocala National Forest contains a high proportion of remaining inland scrub habitat and is noted for its sand pine scrub ecosystem. The forest contains the largest concentration of sand pine in the world as well as some of the best remaining stands of longleaf pine in central Florida. Where fire is absent, southern coastal plain oak domes and hammocks can grow. These are small stands of thick evergreen oaks.