Hawai'ian buttercup (Ranunculus hawaiensis)
Same genus
- Littleleaf buttercup (Ranunculus abortivus)
- Aconite-leaf buttercup (Ranunculus aconitifolius)
- Sharpleaf buttercup (Ranunculus acriformis)
- Tall buttercup (Ranunculus acris)
- Alpine buttercup (Ranunculus adoneus)
- Plantainleaf buttercup (Ranunculus alismifolius)
- Allegheny Mountain buttercup (Ranunculus allegheniensis)
- Allen's buttercup (Ranunculus allenii)