Kauaʻi record · kba_plant_ludwigia_octovalvis
Primrose Willow
Ludwigia octovalvis
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About Primrose Willow
A robust erect-to-spreading shrub or perennial herb with many branches and alternate narrow, smooth-edged leaves. Yellow flowers have four sepals and eight stamens. Long thin-walled fruits open irregularly and contain numerous tiny seeds with an inflated ridge nearly as large as the seed body. This native shrub is a component of Hawaiian vegetation. Monitoring mature plants, new recruits and occupied cover can assess persistence and replacement. The reviewed accounts do not establish a measured Kauaʻi population trend or quantify an ecosystem effect.
Kauaʻi evidence
Generated media is not occurrence evidence. Proposed monitoring endpoints are not reported observations, measured effects or causal findings.
Names and classification
- Scientific name
- Ludwigia octovalvis
- Common names
- primrose willow
- Hawaiian names
- kāmole · alohalua · kāmole lau liʻi · kāmole lau nui
- Other names
- Ludwigia octovalvis · primrose willow · kāmole · alohalua · kāmole lau liʻi · kāmole lau nui
- Record type
- Species
Kauaʻi occurrence and status
- Kauaʻi occurrence
- Recorded on Kauaʻi
- Origin
- Indigenous
- Conservation status
- Not yet assessed
- Evidence date
- 2026-10-07
- Evidence limits
- Island-level public occurrence only.
Habitat and ecology
- Habitats
- Not yet assessed
- Food and resource needs
- Not yet assessed
- Reproduction
- Not yet assessed
- Shelter
- Not yet assessed
- Growth form
- Shrub or subshrub; Robust, erect to spreading, many branched perennial herb or shrub, 1‒4 m tall, subglabrous to densely villous.
Threats and conservation
- Monitoring
- Occupied area and vegetation cover; Mature plants and new recruits; Reproductive plants and fruiting frequency. Proposed monitoring endpoints are not reported observations, measured effects or causal findings.
- Data gaps
- Current island extent and population trend · Measured local ecological effects
Process and seasonal context
- Seasonal timing
- Not yet assessed
- Seasonal description
- A robust erect-to-spreading shrub or perennial herb with many branches and alternate narrow, smooth-edged leaves. Yellow flowers have four sepals and eight stamens. Long thin-walled fruits open irregularly and contain numerous tiny seeds with an inflated ridge nearly as large as the seed body. This native shrub is a component of Hawaiian vegetation. Monitoring mature plants, new recruits and occupied cover can assess persistence and replacement. The reviewed accounts do not establish a measured Kauaʻi population trend or quantify an ecosystem effect.