Blue pine

Pinus wallichiana

''Pinus wallichiana'' is a coniferous evergreen tree native to the Himalaya, Karakoram and Hindu Kush mountains, from eastern Afghanistan east across northern Pakistan and India to Yunnan in southwest China. It grows in mountain valleys at altitudes of 1800–4300 m , between 30m and 50m in height. It favours a temperate climate with dry winters and wet summers.
Bhutan Pine cones  Blue pine,Pinus wallichiana

Appearance

The leaves are in fascicles of five and are 12–18 cm long. They are noted for being flexible along their length, and often droop gracefully. The cones are long and slender, 16–32 cm, yellow-buff when mature, with thin scales; the seeds are 5–6 mm long with a 20–30 mm wing.
Bhutan Pine  Blue pine,Pinus wallichiana

Naming

This tree is often known as 'Bhutan pine', . Other names include 'blue pine', 'Himalayan white pine' and 'Himalayan blue pine'. In the past, it was also known by the invalid botanic names ''Pinus griffithii'' McClelland or "''Pinus excelsa''" Wall., ''Pinus chylla'' Lodd. when the tree became available through the European nursery trade in 1836, nine years after Dr Wallich first introduced seeds to England.

Habitat

Typical habitats are mountain screes and glacier forelands, but it will also form old growth forests as the primary species or in mixed forests with deodar, birch, spruce, and fir. In some places it reaches the tree line.

Uses

The wood is moderately hard, durable and highly resinous. It is a good firewood but gives off a pungent resinous smoke. It is a commercial source of turpentine which is superior quality than that of ''P. roxburghii'' but is not produced so freely.

It is also a popular tree for planting in parks and large gardens, grown for its attractive foliage and large, decorative cones. It is also valued for its relatively high resistance to air pollution, tolerating this better than some other conifers.

This plant has gained the Royal Horticultural Society's Award of Garden Merit.

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Status: Unknown
EX EW CR EN VU NT LC
Taxonomy
KingdomPlantae
DivisionPinophyta
ClassPinopsida
OrderPinales
FamilyPinaceae
GenusPinus
Species
Photographed in
France