jack pine Pinaceae Pinus banksiana Lamb.   symbol: PIBA2
	Leaf: Evergreen needles, 3/4 to 1 1/2 inches long, two twisted, divergent needles per fascicle, fascicle sheath is present but short; yellow-green in color. Flower: Monoecious; males cylindrical, yellow-green, in clusters at twig tips; females oval, reddish. Fruit: Serotinous, persistenting on the tree for several years; 1 1/2 to 2 inches long, curved, light brown but graying with age; apophysis round and umbo armed with a small prickle. Twig: Yellow to greenish brown when young, turning gray-brown with age, very resinous, narrowly ovoid buds. Bark: At first dark and scaly, the bark later develops scaly ridges. Form: A small to medium sized tree up to 80 feet tall, with a small, irregular crown. Dead branches self-prune poorly. Cones are retained for several years, resulting in a coarse appearance.
	USDAFS Silvics of North America - USDAFS Additional Silvics - Landowner Factsheet - USDA Plants Database Pinus banksiana is native to North America. Range may be expanded by planting. See states reporting jack pine (opens a new window).