southwestern white pine Pinaceae Pinus strobiformis Engelm. symbol: PIST3 Leaf: Evergreen needles, 2 to 3 inches long, in fascicles of 5, finely serated near tips, thin bluish-green with white stomatal lines only on inner surfaces, fascicle sheath deciduous. Flower: Species is monoecious; males cylindrical, pale yellow, in clusters near branch tips; females light green to reddish, near ends of branches. Fruit: Woody cone, 5 to 9 inches long, yellow-brown, thick scales bend backwards and have a narrow tip, matures in late summer. Twig: Slender to moderate, green turning to a gray-brown, buds ovate, conical. Bark: Gray-brown and initially smooth, becoming furrowed with scaly, rounded ridges. Form: Medium sized straight tree with a conical crown when young, later broader with up-turned branches and a flat top. Looks like: limber pine - western white pine - whitebark pine - sugar pine Additional Range Information: Pinus strobiformis is native to North America. Range may be expanded by planting. See states reporting southwestern white pine. External Links: USDAFS Additional Silvics USDA Plants Database © Copyright 2016, Virginia Tech Dept. of Forest Resources and Environmental Conservation, all rights reserved. Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson