Kauaʻi record · kba_plant_eucalyptus_aggregata

Black Gum

Eucalyptus aggregata

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About Black Gum

Black Gum (Eucalyptus aggregata) is a post-contact introduced tree documented on Kauaʻi through historical forestry planting records. The reviewed records do not establish present survival. Native to cool, poorly drained flats and depressions of eastern New South Wales and south-central Victoria. A 1980 forestry ledger documents Kauaʻi planting in 1931; it does not establish current survival, reproduction, or naturalization.

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. The 1918–1959 Kauaʻi reforestation working register records 161 plants under Eucalyptus aggregata across 2 entries dated 1931. These are recorded planting quantities, not counts of surviving trees, and they do not by themselves establish current persistence, naturalization, or ecological impact. Source: Kauaʻi Reforestation Plantings 1918–1959 working register (user-supplied; reconciled 6 October 2026).

Names and classification

Scientific name: Eucalyptus aggregata
Common names: Black Gum
Other names: Eucalyptus aggregata · Black gum
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 survival on Kauaʻi, number of trees, occupied habitat, flowering or fruiting, recruitment, population trend, and ecological effects are all unconfirmed; no naturalization or invasive severity is inferred from the historical planting record.

Habitat and ecology

Habitats: Not yet assessed
Food and resource needs: Not yet assessed
Reproduction: Flowers or pollen cones require pollination and mature fruits or seed cones release seed. Kauaʻi flowering, pollination, seed production, dispersal, viability, and recruitment are unknown.
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: Black Gum (Eucalyptus aggregata) is a post-contact introduced tree documented on Kauaʻi through historical forestry planting records. The reviewed records do not establish present survival. Native to cool, poorly drained flats and depressions of eastern New South Wales and south-central Victoria. A 1980 forestry ledger documents Kauaʻi planting in 1931; it does not establish current survival, reproduction, or naturalization.

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