Rosebay willowherb (Epilobium angustifolium) seeds. Seed pods of the rosebay willowherb plant discharging their seeds (white, fluffy). Each seed has a plume of fine hairs that help the seed to remain airborne, aiding its dispersal by wind. The seeds are contained within chambers in a pod. When ripe, the pod splits open (as seen here) to release the seeds contained within.