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Hollong

Dipterocarpus retusus

Also called Hollong Gurjuntree

Hollong
Photo: Franz Eugen Köhler, Köhler's Medizinal-Pflanzen, Public domain

Hollong is a large forest tree, 20 to 30 metres tall, native to South and Southeast Asia and south-central China, and it is the best known species of its genus. It is grown mainly for timber and resin rather than as an ornamental, and it is typically found in wet tropical lowland to hill forests.

Family
Dipterocarpaceae (Dipterocarp family)
Grows as
Tree
Light
Full sun
Native range
Assam to China (W. & SE. Yunnan), Indo-China to Lesser Sunda Is.
Climate
wet tropical

About

Dipterocarpus retusus, commonly known as hollong, is a large tree and perhaps the best known species in the genus Dipterocarpus. It is native to south-central China (western and southeastern Yunnan), Vietnam, the Philippines, Laos, Cambodia, Peninsular Malaysia, Indonesia (Sumatra, Java, and the Lesser Sunda Islands), Myanmar, and northeastern India. The tree, some 20–30 metres (70–100 ft) tall, is found in Cambodia in dense forests of the plains, common on hillsides and along rivers and in forests between 800 m (2,600 ft) and 1,500 m (5,000 ft) elevation.

Hollong is the state tree of Assam and Arunachal Pradesh, India. In India, the timber is used for plywood and making various containers. In China, the timber is used in construction. Hollong is a sacred tree for Moran community of Assam.

Uses

It is farmed for its timber and resin. In Cambodia, the resin is collected by people in the mountainous regions, in order to make torches and candles, while the wood is used in construction to make columns and boards.

Other Dipterocarpus plants

Hairy Leaf Apitong · Dipterocarpus gracilis · Dipterocarpus grandiflorus · Dipterocarpus hasseltii · Dipterocarpus oblongifolius · Dipterocarpus sublamellatus

Text excerpted from the Wikipedia article Dipterocarpus retusus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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