Image: Acorus calamus (calamus) | Date: 7 July 2015 | Author: Estormiz | Source: Wikimedia Commons in the public domain | https://commons.wikimedia.org/wiki/File:Acorus_Calamus_Oulu_20150707.jpg
University of Oulu Botanical Gardens
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| Image: Acorus calamus (calamus) | Date: 7 July 2015 | Author: Estormiz | Source: Wikimedia Commons in the public domain | https://commons.wikimedia.org/wiki/File:Acorus_Calamus_Oulu_20150707.jpg |