⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record kew-2340, 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 2340) with original publication details: Prodr. Syst. Aroid. 578 1860.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:84031-1.