The Collaborative International Dictionary
great willow herb
Rosebay \Rose"bay`\, n. (Bot.)
the oleander. [Obs.]
Any shrub of the genus Rhododendron. [U.S.]
An herb ( Epilobium spicatum) with showy purple flowers, common in Europe and North America; -- called also great willow herb.
Usage examples of "great willow herb".
Along its further side the riparian plants grew thickly, so that it was separated from the river by a kind of hedge of purple loosestrife, great willow herb, fleabane, figwort and hemp agrimony, here and there already in bloom.