The tree species Pinus koraiensis is commonly called Korean pine. It is native to eastern Asia: Korea, Manchuria, Mongolia, the Temperate rainforests of the Russian Far East, and central Japan. In the north of its range, it grows at moderate altitudes, typically 600 metres (2,000 ft) to 900 metres (3,000 ft), whereas further south, it is a mountain tree, growing at 2,000 metres (6,600 ft) to 2,600 metres (8,500 ft) altitude in Japan. It is a large tree, reaching a mature size of 40 metres (130 ft) to 50 metres (160 ft) height, and 1.5 metres (4.9 ft) to 2 metres (6.6 ft) trunk diameter. It 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,[citation needed] with a deciduous sheath. They are 7 centimetres (2.8 in) to 13 centimetres (5.1 in) long. Korean pine cones are 8 centimetres (3.1 in) to 17 centimetres (6.7 in) long, green or purple before maturity, ripening brown about 18 months after pollination. The 14 millimetres (0.55 in) to 18 millimetres (0.71 in) long seeds have only a vestigial wing and are dispersed by spotted nutcrackers.
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