White Common Foxglove (Digitalis purpurea forma albiflora) flowers. The flowers have a long bell shape with purple spots down the middle of the lower part. At the tops of the flowers you can glimpse the white style and brown anthers carrying yellow pollen.
The flowers rely on bees climbing up their tube shape to get to the nectar at the end. As they do so, the bees brush their backs against the stigma and anthers at the top of the flower. As this process is repeated between flowers, the Bees transfer the pollen from the anthers of one flower to the stigma of another, thus pollinating them.