|Merkus Pine, Sumatran pine|
|Pinus merkusii is a large tree up to 50(-70) m tall with a straight and cylindrical bole free of branches for 15-25 m and an average diameter of 55 cm, but occasionally up to 140 cm, thick bark which forms plates and is grey-brown underneath, but scaly and more reddish tinged upwards, and heavy horizontal or ascending branches.|
It is the southernmost occurring pine of all pines, and the only one whose natural distribution extends into the southern hemishpere.
The naturally occurring pines of South-East Asia (P. kesiya and P. merkusii) inhabit a wide range of forest and savanna habitats. They are pioneers and their natural range is extended by colonization following disturbances such as fire. They grow, for instance, scattered in fire-prone grassland and woodland. The trees are increasing in number in recently disturbed areas. They are strongly light-demanding and habitually grow in pure stands. Pines grow naturally in South- East Asia only in strongly seasonal environments.
Pine is a medium weight, moderately hard wood. The grain of pine wood is even to finely interlocked, texture coarse.
Pine is a good general-purpose timber, although in woodworking and finishing aspect its resinous nature requires special attention. It can be put to a great number uses such as both light and heavy constructional work, joinery, pencils and furniture, veneer and plywood
|Gum or resin: Good quality oleoresin is collected from this species, often on plantation scale.|
Fuel: The energy value of the wood is 20 300-23 200 kJ/kg.
Timber: Merkus pine is a general-purpose timber; it can also be used for construction work, flooring and boat building as it is fairly durable and heavy