| RAN | perennial European buttercup with yellow spring flowers widely naturalized especially in eastern North America |
|---|---|
| RAN | plant of ponds and slow streams having submerged and floating leaves and white flowers |
| RAN | perennial Old World buttercup with golden to sulphur yellow flowers in late spring to early summer |
| RAN | perennial herb native to Europe but naturalized elsewhere having heart-shaped leaves and yellow flowers resembling buttercups |
| RAN | semi-aquatic Eurasian perennial crowfoot with spear-shaped leaves |
| RAN | small early-flowering buttercup with shiny yellow flowers of western North America |
| RAN | semi-aquatic European crowfoot with spear-shaped leaves |
| RAN | showy white-flowered perennial of New Zealand |
| RAN | perennial of western North America |
| RAN | perennial European herb with long creeping stolons |
| RAN | annual herb growing in marshy places |
| RAN | small gaps in the myelin sheath of medullated axons |