No Data Found
Alstonia angustiloba
Common Pulai
High Sensitivity
| Species Name | Alstonia angustiloba |
|---|---|
| Common Name | Common Pulai |
| Family | Apocynaceae |
| Genus | Alstonia |
| Taxonomic Synonyms/Past Names | |
| Taxonomic Notes |
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Species Information
1. Description
- Tree up to 50 m tall, diameter to 1 m and characteristic high-fluted bole with a pagoda-shaped crown. Leaves are arranged in whorls of 4-7(-9). The creamy white to pale yellow flowers are arranged in dense clusters and are fragrant. Fruits paired follicles, pendulous. Trees often flower synchronously; in flowering trees, the whole crown may have creamy white to pale yellow flowers.
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
- Thailand, Sumatra, Peninsular Malaysia, Singapore, Borneo, and Java
4. Habitat and Ecology
- Found naturally in lowland forests and often in secondary forests
5. Altitude (in meters)
- Up to elevations of 1000 m
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
Not Evaluated
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Not Evaluated (1)
Not Applicable (0)
Data Deficient (0)
Least Concern (0)
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?
Yes
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Yes (1)
No (0)
Unknown (0)
10. How would you characterise the growth rate of this species?
Fast
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Fast (1)
Medium (0)
Slow (0)
Unknown (0)
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- It is a pioneer species. Pioneer species are typically fast-growing. [1]
11. Does this species have an invasive root system?
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- It has deep roots with water availability [1]
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?
Yes
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Yes (1)
No (0)
Unknown (0)
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- Its fruits develop as a pair of pods 15-35 by 0.2-0.6 cm. The seeds are dark brown, flat, oblong, smooth, and wind-dispersed. No staining. [1]
14. Does this species produce substances in its bark, leaves, fruits and/or seeds that are poisonous or harmful to humans?
Yes
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Yes (1)
No (0)
Unknown (0)
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- Produces pollen during blooming that is known to cause nasal allergies [1]
15. Does this species have specific lighting requirements?
Full sun
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Full sun (1)
Partial sun & shade (0)
Full shade (0)
Partial shade (0)
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)
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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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18. Does this species have specific soil ph requirements?
Yes
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Yes (1)
No (0)
Unknown (0)
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19. Does this species have specialised habitat requirements?
No
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Yes (0)
No (1)
Unknown (0)
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- Grows in moist and well-drained or fertile loamy soils. [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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- Grows in primary and secondary forests, swamps, and on hills, in loam or sandy soils. [1]
21. Does this species occur/survive at locations that experience high temperatures?
No
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Yes (0)
No (1)
Unknown (0)
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- The leaves and flowers are sensitive to extreme conditions. [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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23. Can this species tolerate water absence for >1 month?
Yes
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Yes (1)
No (0)
Unknown (0)
- Specimens at Kepong Botanic Gardens, Selangor, did well during dry spells lasting three weeks.
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24. Can this species tolerate storm conditions (e.g., strong winds)?
No
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Yes (0)
No (1)
Unknown (0)
- It has a large canopy and brittle branches. Specimens in Kuala Lumpur and Selangor experienced limb breakage during storms.
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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?
Yes
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Yes (1)
No (0)
Unknown (0)
- Newly planted trees at Kepong Botanic Gardens, Selangor, had a leaf defoliation problem.
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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)?
Yes
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Yes (1)
No (0)
Unknown (0)
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- Its fragrant flowers attract pollinating bees and butterflies [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)
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- Listed as a heritage tree in Singapore. Has medicinal uses: The latex from the bark can treat abscesses and boils. Used for timber and to make products: The softwood makes floorboards, posts, and matches. [1]
Contributors: anonymous
Last Updated: 2023-03-15
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