Parry pinyon is a coniferous tree noted for its clusters of four needles, a trait from which its name is derived. The needles are slender, flexible, and arranged in fascicles, giving the branches a soft, feather-like appearance. Typically found in arid climates, parry pinyon has adapted by growing in a compact, rounded shape to conserve water. The tree produces small, resinous cones, which thrive in its native, limited-rainfall habitats.