⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2301, and has not been changed.
This name is a synonym of Acorus calamus var. angustatus Besser.
The record derives from WCSP which reports it as a synonym (record 2301) with original publication details: Rep. Exped. Manchoukuo Sect. iv 4: 105 1936.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:84006-1.