No Data Found
Gymnostoma sumatranum
Hill Rhu, Rhu Bukit
| Species Name | Gymnostoma sumatranum |
|---|---|
| Common Name | Hill Rhu, Rhu Bukit |
| Family | Casuarinaceae |
| Genus | Gymnostoma |
| Taxonomic Synonyms/Past Names | |
| Taxonomic Notes |
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Species Information
1. Description
- Evergreen tree growing up to 20 m tall. Crown conical when young, becoming roundish. Leaves in whorls of 4 at intervals of 0.5-1 cm. Flowers minute and unisexual, with males and females in different clusters. Male flowers in simple terminal spikes, female flowers in terminal heads. Fruits c. 2.5 cm across, ellipsoid and in cone-like heads.
2. Tree Size
Medium (10-15 m)
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Small (4-10 m) (0)
Medium (10-15 m) (1)
Large (>15 m) (0)
Unknown (0)
3. Full Distribution
- Sumatra and Borneo
4. Habitat and Ecology
- Confined to hills, ridges and lower montane forests on ultramafic soils, and heath vegetation on sandstone
5. Altitude (in meters)
- 600-1800 m altitude
6. Landscape Type
Coastal Fronts
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Urban Streets (0)
Blue-green Corridors (0)
Small Urban Green Spaces (0)
Coastal Fronts (1)
Unknown (0)
7. IUCN Conservation Status
Not Evaluated
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Not Evaluated (1)
Data Deficient (0)
Least Concern (0)
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
Data Deficient
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Not Evaluated (0)
Not Applicable (0)
Data Deficient (1)
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?
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?
No
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Yes (0)
No (1)
Unknown (0)
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12. Is this species damaging or does it have staining resin or sap?
No
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Yes (0)
No (1)
Unknown (0)
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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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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
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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?
No
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Yes (0)
No (1)
Unknown (0)
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- pH 6.2-7.0 [1]
19. Does this species have specialised habitat requirements?
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20. Does this species occur/survive in habitats prone to saltwater intrusion?
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21. Does this species occur/survive at locations that experience high temperatures?
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22. Can this species tolerate inundation for >1 month?
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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 Forest Research Institute Malaysia and Kepong Botanic Gardens, Selangor, were tolerant of dry spells lasting three weeks and should be able to survive for one month.
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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)
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25. Does this species have specific humidity requirements?
No
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Yes (0)
No (1)
Unknown (0)
- Suitable for planting in open areas.
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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)?
Yes
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Yes (1)
No (0)
Unknown (0)
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29. Does this species have cultural value or provide products that are of some use to humans?
No Data Found
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Contributors: anonymous
Last Updated: 2023-03-15
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