Kauaʻi record · kba_plant_acacia_mangium

Mangium

Acacia mangium

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About Mangium

Mangium (Acacia mangium) is an introduced tree treated as naturalized on Kauaʻi by Bishop Museum’s 2025 checklist and the 2026 Smithsonian checklist. Current extent is unassessed. A nitrogen-fixing wet-tropical tree native from Maluku through New Guinea to northern Queensland. It grows rapidly in open and disturbed settings and is introduced across many tropical regions. The reviewed 2025 Hawaiian vascular-plant checklist records it as naturalized on Kauaʻi. That status confirms establishment but does not quantify current abundance, distribution, or ecological effects on the island.

Kauaʻi evidence

Taxonomic identity, tree form, diagnostic morphology and island occurrence use the linked reviewed sources. Historical planting, cultivation, naturalization and invasive status are separate. Generated imagery is not occurrence evidence.

Names and classification

Scientific name: Acacia mangium
Common names: Mangium · Hickory wattle · Black wattle · Brown salwood
Other names: Acacia mangium · Mangium · Hickory wattle · Black wattle · Brown salwood · Racosperma mangium
Record type: Species

Kauaʻi occurrence and status

Kauaʻi occurrence: Recorded on Kauaʻi
Origin: Introduced
Conservation status: Not yet assessed
Evidence date: 2026-10-06
Evidence limits: Current island-wide abundance, occupied habitats, reproductive distribution, and ecological impact on Kauaʻi have not been established by the reviewed census evidence.

Habitat and ecology

Habitats: Not yet assessed
Food and resource needs: Not yet assessed
Reproduction: Cream-white flower spikes develop into leathery coiled pods containing hard-coated seeds. Physical dormancy commonly limits germination, and hot-water or mechanical scarification is used to improve germination. Kauaʻi-specific flowering periods, seed production, dispersal, and recruitment rates remain unquantified.
Shelter: Not yet assessed
Growth form: Tree

Threats and conservation

Monitoring: Not yet assessed
Data gaps: Current population extent and trajectory · Additional species-specific ecological and conservation sources

Process and seasonal context

Seasonal timing: Not yet assessed
Seasonal description: Mangium (Acacia mangium) is an introduced tree treated as naturalized on Kauaʻi by Bishop Museum’s 2025 checklist and the 2026 Smithsonian checklist. Current extent is unassessed. A nitrogen-fixing wet-tropical tree native from Maluku through New Guinea to northern Queensland. It grows rapidly in open and disturbed settings and is introduced across many tropical regions. The reviewed 2025 Hawaiian vascular-plant checklist records it as naturalized on Kauaʻi. That status confirms establishment but does not quantify current abundance, distribution, or ecological effects on the island.

Sources and further reading

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