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Dyera costulata - (Miq.) Hook.f.
                 
Common Name Hill Jelutong
Family Apocynaceae
USDA hardiness 10-12
Known Hazards None known
Habitats Primary evergreen lowland or hill forest up to 300 metres[ 338 ]. In undisturbed forests at elevations up to 400 metres. Usually on hillsides and ridges on clayey to sandy soils. In secondary forests usually present as a pre-disturbance remnant[ 359 ].
Range Southeast Asia - Malaysia, Thailand, Indonesia.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Tender Moist Soil Full sun

Summary
Hill Jelutong (Dyera costulata) is a large, deciduous tree with a spreading crown that grows up to 75 m in height. The trunk is not buttressed and can be up to 3 m in diameter and up to 30 m unbranched. It can be found in Southeast Asia where it has long been exploited for timber and latex. The latex is used for chewing gum, celluloid, linoleum, insulation of electric cables, cement, paints, paper, etc. The resinous fruits are used as torches and as mosquito repellent. The roots are used as cork substitute. The wood, on the other hand, are used for carving, pencils, matches, veneer, etc.

Dyera costulata Hill Jelutong


International Institute of Tropical Agriculture
Dyera costulata Hill Jelutong
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Physical Characteristics
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Dyera costulata is a deciduous Tree growing to 50 m (164ft) by 30 m (98ft) at a medium rate.
It is hardy to zone (UK) 10. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Synonyms
Alstonia costulata Miq. Alstonia eximia Miq. Alstonia grandifolia Miq. Dyera laxiflora Hook.f.

Habitats
Edible Uses
None known
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



The resinous fruits are used for medicinal purposes[ 317 ].
Other Uses
Other Uses: The latex, obtained by tapping the trunk, is used for the production of chewing gum, celluloid, linoleum and the insulation of electric cables[ 317 ]. Beside this it serves as admixture for cement, paints and paper[ 317 ]. The latex has a number of speciality uses such as pattern making in foundry work, for drawing boards, pencils, picture frames, dowels, carving, blackboards, wooden toys, clogs, brush handles and battery separators, and it is also used for furniture parts, door knobs, ceilings, partitioning, matchsticks, matchboxes and packing cases[ 349 ]. The resinous fruits serve as torches[ 317 ]. They are also burnt to repel mosquitoes[ 349 ]. The roots are used as a substitute for cork[ 325 , 349 ]. The heartwood is creamy white to pale straw coloured with the frequent presence of large latex canals; it is not differentiated from the sapwood. The grain is mostly straight; texture moderately fine and even; slightly lustrous; without taste but with a slight sour odour that is distinctive. The wood is very light in weight; soft; it is not durable, being susceptible to fungi, dry wood borers and termites. It seasons rapidly with only a slight risk of checking or distortion; once dry it is stable in service. The wood works easily with hand and machine tools, but they need to be kept very sharp in order to obtain a smooth finish; latex in the wood may clog the sawteeth; nailing and screwing are poor; gluing is correct. The wood is excellent for carving and is also used, among other things, for making patterns, pencils, matches, match-boxes, boxes and crates, furniture components, interior joinery and panelling, drawing boards, blockboard and veneer[ 316 , 317 , 848 ].
Cultivation details
Industrial Crop: Hydrocarbon;  Management: Standard;  Regional Crop.

A plant of the wet, lowland tropics, where it is usually found at elevations up to 400 metres, exceptionally to 800 metres[ 325 , 359 ]. Requires a sunny position - the tree develops a wide crown when growing in the sun in order to 'claim' its territory[ 325 ]. Prefers a well-drained soil, often growing on hills and ridges in the wild[ 325 ].
Propagation
Seed - the small seed has a limited viability of less than a year. Pre-treatment is not necessary, but soaking the seed in water for 12 hours prior to sowing can speed up the germination process[ 325 ]. Germination rates are usually good, with 80 - 90% of the seeds sprouting. Seedlings can be potted up when the first pair of leaves has emerged and planted out when 30cm tall.
Other Names
Pantung, jelutong.
Found In
Brunei Darussalam; Singapore; Thailand, Asia, Australia, Brunei, Indonesia, Malaysia, SE Asia, Singapore, Thailand,
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status : Status: Lower Risk/least concern
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Goodyera pubescensDowny Rattlesnake Plantain02
Goodyera repensCreeping Lady's Tresses, Lesser rattlesnake plantain02
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Author
(Miq.) Hook.f.
Botanical References
Links / References
For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.
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Subject : Dyera costulata  

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