The Jeffrey Pine (Pinus jeffreyi) is a species of tree native to the western United States. It is known for its tall, straight trunk and distinctive, long needles that grow in clusters of three. The tree can reach heights of up to 200 feet and is often found in mountainous regions, thriving in well-drained soils. This pine species is named after the American botanist John Jeffrey, who explored the western U.S. in the 19th century. The Jeffrey Pine is valued for its durable wood, which is used in construction and furniture making, and its cones, which are larger than those of many other pine species.