⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2656745, and has not been changed.

Astilbe formosa f. nipponica (Nakai) Sugim. is a synonym of Astilbe formosa (Nakai) Nakai

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Keys Herb. Pl. Jap. 1(Dicot.): 733 1965.