Rodgersia pinnata

Rodgersia pinnata is a species of flowering plant in the family Saxifragaceae, native to the Sichuan and Yunnan provinces of China. It is a robust, herbaceous perennial growing to tall by broad, with textured palmate/pinnate leaves up to long, with 5-9 leaflets. erect panicles made up of tiny, star-shaped flowers, are borne on reddish green stems in summer. The flowers are white.
Cultivars may have white, cream, pink or red flowers. Red cultivars include 'Fireworks'.
The following cultivars have won the Royal [Horticultural Society]'s Award of Garden Merit:

'Elegans'
'Irish Bronze'
'Superba'