- Willow herb - the oleander. - Any shrub of the genus Rhododendron. - An herb (Epilobium spicatum) with showy purple flowers,
common in Europe and North America; -- called also great willow herb.
- An American plant (Erechthites hiercifolia), very
troublesome in spots where brushwood has been burned. - The great willow-herb (Epilobium spicatum).
- Pertaining to, or resembling, a natural order of
plants (Onagraceae or Onagrarieae), which includes the fuchsia, the
willow-herb (Epilobium), and the evening primrose (/nothera).