Infructescence: Butomus umbellatus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Fruit, seed: Butomus sp.; Illustration by L. Steinheil and A. Riocreux, A general system of botany (1873), courtesy of Biodiversity Heritage Library
Fruit, seed: Butomus sp.; Illustration by L. Steinheil and A. Riocreux, A general system of botany (1873), courtesy of Biodiversity Heritage Library