Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium
 

Checklist » Acoraceae » Acorus americanus

Acorus americanus (Raf.) Raf. [FNA22]
Acoraceae
American sweetflag, several-vein sweetflag

Origin: Native

Voucher:WS

Notes: Known only from Spokane Co. Taxonomy follows FNA, distinguishing North American and Eurasian taxa at the species level. They differ in their chromosome level, fertility, and leaf venation.

Literature:
» Packer, J. G. and G. S. Ringius. 1984. The distribution and status of Acorus (Araceae) in Canada. Canad. Journal of Botany 62: 2248-2252.

Photo © Fred Weinmann
(from WTU Image Collection)

Taxon treatment authored by Peter F. Zika; last updated 8/21/2012 by David Giblin
Synonyms
Acorus calamus L. in part   [H&C]
Acorus calamus L. var. americanus Rafinesque
Acorus calamus L. var. americanus (Rafinesque) H. Wulff




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