Fruit: Acorus calamus; (4, 6, young fruit); Illustration by W. Müller, Köhler's Medizinal Pflanzen (1887), courtesy of Biodiversity Heritage Library
Fruit: Acorus calamus; (4, 6, young fruit); Illustration by W. Müller, Köhler's Medizinal Pflanzen (1887), courtesy of Biodiversity Heritage Library
Infructescence: Acorus calamus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)