The Himalayan white pine (Pinus wallichiana) is a moderately tall (130 ft) evergreen with uniquely long leaves (needles) in bundles of five. The long needles give the tree an overall droopy look. It produces both male and female flowers on the same tree; its cones are very long (9″), slender, curved and stalked. The wood is moderately hard, durable and highly resinous. It is a commercial source of turpentine. This tree is native to the Himalayas and probably was introduced in this country in the third quarter of the 19th century. In 1874 , the Arnold Arboretum in Boston received a Himalayan pine from Kew Gardens in London.