No Data Found
Dyera costulata
Jelutong, Jelutung
Intermediate Sensitivity
| Species Name | Dyera costulata |
|---|---|
| Common Name | Jelutong, Jelutung |
| Family | Apocynaceae |
| Genus | Dyera |
| Taxonomic Synonyms/Past Names | |
| Taxonomic Notes |
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Species Information
1. Description
- Large deciduous forest tree over 60-80 m tall in the wild, although shorter when planted at the roadside or as a park tree and with a diameter of 250 cm. Leaves are simple, arranged in whorls at the top of the ultimate twigs. Flowers white, yellowish-green or pinkish-yellow, about 3.5 mm across, arranged in whorls on 4-18 cm long flowering shoots. Fruits are brown follicles, 18-40 by 2.5-4 cm.
2. Tree Size
Large (>15 m)
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Small (4-10 m) (0)
Medium (10-15 m) (0)
Large (>15 m) (1)
Unknown (0)
3. Full Distribution
- Distributed in peninsular Thailand, Peninsular Malaysia, Singapore, Sumatra, and Borneo
4. Habitat and Ecology
- Primary lowland or hill forests, well-drained soil. Usually occur as scattered individuals.
5. Altitude (in meters)
- Up to 300 m altitude
6. Landscape Type
Blue-green Corridors
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Urban Streets (0)
Blue-green Corridors (1)
Small Urban Green Spaces (0)
Coastal Fronts (0)
Unknown (0)
7. IUCN Conservation Status
Least Concern
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Not Evaluated (0)
Data Deficient (0)
Least Concern (1)
Near Threatened (0)
Vulnerable (0)
Endangered (0)
Critically Endangered (0)
Extinct in the Wild (0)
Extinct (0)
Unknown (0)
8. Malaysian Red List from MyBIS
Least Concern
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Not Evaluated (0)
Not Applicable (0)
Data Deficient (0)
Least Concern (1)
Near Threatened (0)
Vulnerable (0)
Endangered (0)
Critically Endangered (0)
Regionally Extinct (0)
Extinct in the Wild (0)
Extinct (0)
Unknown (0)
9. Are more than 100 individuals available in local nurseries?
10. How would you characterise the growth rate of this species?
Medium
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Fast (0)
Medium (1)
Slow (0)
Unknown (0)
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11. Does this species have an invasive root system?
Yes
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Yes (1)
No (0)
Unknown (0)
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12. Is this species damaging or does it have staining resin or sap?
Yes
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Yes (1)
No (0)
Unknown (0)
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- Produces white latex, sap [1]
13. Does this species produce large and/or staining fruits?
No
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Yes (0)
No (1)
Unknown (0)
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- Its fruits are brown follicles 18-40 by 2.5-4 cm. [1]
14. Does this species produce substances in its bark, leaves, fruits and/or seeds that are poisonous or harmful to humans?
No
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Yes (0)
No (1)
Unknown (0)
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15. Does this species have specific lighting requirements?
Full sun, Partial shade
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Full sun (1)
Partial sun & shade (0)
Full shade (0)
Partial shade (1)
Unknown (0)
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16. How would you characterise the air pollution tolerance of this species?
High
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Low (0)
Medium (0)
High (1)
Unknown (0)
- Able to tolerate CO and NO2/Nox
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17. How would you characterise the soil pollution tolerance of this species?
High
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Low (0)
Medium (0)
High (1)
Unknown (0)
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- It sequesters heavy metal contamination [1]
18. Does this species have specific soil ph requirements?
No Data Found
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- pH of 6.2-7.0 [1]
19. Does this species have specialised habitat requirements?
No
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Yes (0)
No (1)
Unknown (0)
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- Occurs in primary evergreen lowland or hill forests up to 300 m. [1]
20. Does this species occur/survive in habitats prone to saltwater intrusion?
No
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Yes (0)
No (1)
Unknown (0)
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21. Does this species occur/survive at locations that experience high temperatures?
No Data Found
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- It may be able to adapt to higher temperatures. [1]
22. Can this species tolerate inundation for >1 month?
No
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Yes (0)
No (1)
Unknown (0)
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- Prefers well-drained soil. [1]
23. Can this species tolerate water absence for >1 month?
Yes
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Yes (1)
No (0)
Unknown (0)
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24. Can this species tolerate storm conditions (e.g., strong winds)?
Yes
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Yes (1)
No (0)
Unknown (0)
- Specimens observed in Singapore were wind tolerant.
No Data Found
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25. Does this species have specific humidity requirements?
No
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Yes (0)
No (1)
Unknown (0)
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26. Is this species highly prone to predation, parasitism, and/or disease?
No
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Yes (0)
No (1)
Unknown (0)
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27. Please provide any additional information for this species in the context of climate change resilience and/or vulnerability.
-
Insufficient Data
28. Does this species have biodiversity value (e.g., provides food or habitat, or increases landscape connectivity for urban fauna)?
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- Increases landscape connectivity for urban wildlife [1]
29. Does this species have cultural value or provide products that are of some use to humans?
Yes
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Yes (1)
No (0)
Unknown (0)
- Jelutong, a suburb of George Town in Penang, Malaysia, is named after this tree. Has medicinal properties and is used to make products, such as matches and pencils. The latex is an ingredient in chewing gum.
No Data Found
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- Jelutong, a suburb of George Town in Penang, Malaysia, is named after this tree. Has medicinal properties and is used to make products, such as matches and pencils. The latex is an ingredient in chewing gum. [1]
Contributors: anonymous
Last Updated: 2023-03-15
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