Pinus jeffreyi, commonly known as Jeffrey pine, is a species of pine tree native to the western United States. It typically grows in mountainous regions, particularly in California and parts of Nevada. This tree can reach heights of 30 to 50 feet and is characterized by its long, slender needles that grow in bundles of three. The bark is thick and dark brown, often with a distinctive orange hue. Jeffrey pine produces large, woody cones that can be up to 12 inches long. The tree thrives in well-drained soils and is often found in mixed conifer forests alongside other species like Pinus ponderosa and Abies concolor. Its wood is valued for construction and furniture-making due to its strength and durability.