Sanguisorba stipulata var. rishirensis

This lovely plant carries the long, grey-green, serrated edged leaves on tall, slender stems that are topped with long, catkin-like white flowers. The flowers are made up of white stamens that emerge from red buds and the red shows through the white creating a lovely effect. I'm not entirely sure if this is true to name, as this plant has been growing in my garden for a while, but with no label. As far as I know this is the correct name, but it could be S. armena.