Willow-herb
Willow-herb , noun
(Botany) A perennial herb (Epilobium spicatum) with narrow willowlike leaves and showy rose-purple flowers. The name is sometimes made to include other species of the same genus.
Collocations (1)
Spiked willow-herb , a perennial herb (Lythrum Salicaria) with willowy leaves and spiked purplish flowers.