Bhutan Pine 2016

Tree No 99bPinus wallichiana (Bhutan pine) description

photo

Bhutan Pine Pinus wallichiana A native of the Himalayas and introduced into Britain in 1823 by A.B. Lambert. In the wild state can reach 46 metres. It grows at 2500/3000 metres A very rapid grower – the leading shoot can grow 75 cm annually. Pinus wallichiana (Bhutan pine) description

Tree to 50+ m tall with straight trunk and short, downcurved branches. Branches longer in solitary trees, creating a dome-like crown. Bark on young trees smooth, becoming fissured with age. Branches in regularly spaced whorls, smooth. Young shoots glaucous, later turning pale grey-green, smooth, ribbed, darkening with age. Winter buds grey with an orange tinge, ovoid-conic, pointed. Leaves in fascicles of 5, basal sheaths deciduous, 15-20 cm long, often curved at the base, slender, flexible, abaxial side green, adaxial side with multiple bluish-white stomatal lines; usually pendant but in some trees spreading. Male strobili on lower branches, often in dense clusters on younger twigs. Female cones in groups of 1-6, 20-30 cm long, erect when young but later pendant [see photo], bluish-green when young, maturing to light brown with pale brown apophyses. Cone scales wedge-shaped, wide near the apex, apophysis grooved, ending in a blunt umbo; basal scales usually not, or only slightly, reflexed, very resinous (Farjon 1984).

Distribution and Ecology

Himal: southern flank, from Afghanistan through Pakistan, India, Tibet (China: Xizang), Nepal and Bhutan to Burma. Found in valleys and foothills at elevations of 1800-3900 m, sometimes in pure stands but often in association with conifers including Cedrus deodara, Abies pindrow, Picea smithiana and Juniperus excelsa subsp. polycarpos, and with broadleaved species including Quercus semecarpifolia, Betula utilis, ard Acer and Ilex species. It may also be associated with the more narrowly distributed pines Pinus kesiya and P. roxburghii. It is shade-intolerant, thus early seral (Farjon 1984, Sahni 1990, Singh and Yadav 2000). Hardy to Zone 8 (cold hardiness limit between -12.1°C and -6.7°C) (Bannister and Neuner 2001).

This tree was worryingly looking sick in the Summer of 2015. It is hoped it will recover. Time will tell. In the Summer 2016, sadly the tree died and Honey fungus was suspected as the cause of death. A replacement tree was purchased from Barcham’s and planted in November 2016 on a new site to the East of the Pagoda tree.

 

This tree was planted in 2016 as a replacement to the tree that died from Honey fungus in 2016.

It was planted in memory of Ron Hubbard.