⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2656736, and has not been changed.
This name is a synonym of Astilbe thunbergii var. congesta .
The record derives from WCSP (in review) which reports it as a synonym with original publication details: Bot. Mag. (Tokyo) 36: 121 1922.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:790273-1
.