Kauaʻi record · kba_plant_cyanea_coriacea

Hāhā

Cyanea coriacea

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About Hāhā

Hāhā (Cyanea coriacea) is recorded as an established shrub on Kauaʻi. A shrub about 2.5–3 metres tall with a single stem or limited branching. Large smooth leaves are relatively long and narrow, with a pale underside. Clusters bear slender pale flowers with a purple tint. Round ripe purple berries are about 6–10 millimetres across. Documented component of native vegetation; wild-population survival, recruitment and occupied vegetation cover provide measurable conservation endpoints.

Kauaʻi evidence

Established island occurrence follows the Bishop Museum checklist. Diagnostic morphology follows Smithsonian Hawaiian Flora; accepted identity follows Kew WCVP. Generated imagery is not occurrence evidence. Proposed monitoring endpoints are not reported observations, measured effects or causal findings.

Names and classification

Scientific name: Cyanea coriacea
Hawaiian names: hāhā
Other names: Cyanea coriacea · hāhā · Cyanea coriacea var. degeneriana · Cyanea coriacea var. fauriei · Cyanea fauriei · Delissea coriacea · Delissea coriacea var. degeneriana · Delissea coriacea var. deltoidea · Delissea coriacea var. haupuensis · Delissea coriacea var. lumahaiensis · Delissea perlmanii
Record type: Species

Kauaʻi occurrence and status

Kauaʻi occurrence: Recorded on Kauaʻi
Origin: Endemic
Conservation status: Not yet assessed
Evidence date: 2026-10-07
Evidence limits: Current extent and island effect sizes are unassessed. Public occurrence remains island-level only.

Habitat and ecology

Habitats: Mesic forest valleys
Food and resource needs: Not yet assessed
Reproduction: Local pollinators, flowering schedules, seedling establishment and recruitment rates are not independently assessed.
Shelter: Not yet assessed
Growth form: Shrub or subshrub

Threats and conservation

Monitoring: Wild plant survival and recruitment; Flowering, fruiting and seed production; Native habitat cover and documented herbivory. Proposed monitoring endpoints are not reported observations, measured effects or causal findings.
Data gaps: Current island population extent and trend · Quantified local environmental effects

Process and seasonal context

Seasonal timing: Not yet assessed
Seasonal description: Hāhā (Cyanea coriacea) is recorded as an established shrub on Kauaʻi. A shrub about 2.5–3 metres tall with a single stem or limited branching. Large smooth leaves are relatively long and narrow, with a pale underside. Clusters bear slender pale flowers with a purple tint. Round ripe purple berries are about 6–10 millimetres across. Documented component of native vegetation; wild-population survival, recruitment and occupied vegetation cover provide measurable conservation endpoints.

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