The Siberian Pine, Pinus sibirica, in the family Pinaceae is a species of pine tree that occurs in Siberia from the Ural Mountains to central Mongolia. In the north of its range, it grows at low altitudes, typically 100–200 m, whereas further south, it is a mountain tree, growing at 1,000-2,400 m altitude. It often reaches the alpine tree line in this area. The mature size is up to 30–40 m height, and 1.5 m trunk diameter. Its maximum lifetime is 800–850 years. Pinus sibirica is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, with a deciduous sheath. They are 5–10 cm long. Siberian Pine cones are 5–9 cm long. Siberian Pine is a popular ornamental tree in parks and large gardens where the climate is cold, such as central Canada, giving steady though not fast growth on a wide range of sites. It is very tolerant of severe winter cold, hardy down to at least –60 °C, and also of wind exposure. The seeds are also harvested and sold as pine nuts. The Russian name (tr. Sibirsky Kedr) is often miss-translated in English as "Siberian Cedar"; references to "cedar" in texts translated from Russian usually refer to this tree or related pines, not to cedars.