Pinus monticola

Western white pine or California mountain pine is in the pine or Pinaceae family and is native to the mountain ranges of western Canada and the United States, extending to sea level in the Pacific Northwest. It is the state tree of Idaho, and is sometimes known as Idaho pine It can grow up to 50 m tall.

• It is a 5-needle pine, needles fine, 5–11 cm long, minutely toothed, bluish green with stomatal lines, sheath deciduous. Branches are in whorls, 1 per year.
• Species is monoecious; male cones are small, yellow, and clustered near the tips of branches; young female cones are larger, almost round, greenish pink in color, and clustered near the tips of branches in the upper parts of the crown.
• Seed cones mature in 2 years and are long and slender, 12–32 cm long and 3–4 cm broad (closed), opening to 5–8 cm broad; cones on 2-cm stocks; scales are thin and flexible; cones drop after winter shedding of seeds.
• Bark is grey and thin, smooth, becoming furrowed into smaller rectangular to hexagonal scaly plates.
• Western white pine is related to the eastern white pine (P. strobus), but has larger cones and slightly longer-lasting needles (2–3 years, rather than 1.5–2 years).