'Albicans' ('Magnificum Album') has white flowers and is shorter.
'Venusta' ('Magnifica', 'Venusta Magnifica'F. venusta) has deep pink flowers.
Related species include:
Siberian Meadowsweet (F. palmata) 4 feet tall with medium-green palmate leaves with fuzzy white undersides. Flowers range from pale to deep pink and are borne inclusters on erect stems. Zones 3 to 9. Russia, China, Japan.
Japanese Meadowsweet (F. purpurea) 4 feet tall with medium-green toothed, lobed leaves and erect purple-red flower stems with deep reddish pink blooms. Zones 4 to 9. Japan.
Queen of the Meadow, Meadowsweet F. ulmaria 2 to 3 feet tall with toothed, lobed medium-green leaves and erect, branched flower stems with dense clusters of creamy white blooms. Zones 3 to 9. Europe, Western Asia.