1. Appalachian Mixed Forest: Covers most of the state and is characterized by deciduous trees, such as oak, maple, and hickory; a variety of shrubs; and a diverse herbaceous layer.
2. Appalachian Oak-Hickory Forest: Found in the southern and western regions of the state and is dominated by oak and hickory trees, along with other hardwood species.
3. Allegheny Plateau Forests: Situated in the northern and central regions of the state and is composed of a mix of deciduous forests, hemlock forests, and spruce-fir forests.
4. Eastern Broadleaf Forest: Occurs in the southeastern corner of the state and is characterized by oak, hickory, tulip poplar, and black cherry trees.
5. Oak Savanna: A rare biome found in a few locations in the state and is characterized by open grasslands with scattered oak trees.