Infructescence, fruits: Alisma plantago-aquatica; USDA APHIS PPQ, Kirkbride et al. (2006)
Seeds: Alisma plantago-aquatica; Photo by South Australian Seed Conservation Centre, used with permission
Seeds: Alisma plantago-aquatica; Photo by South Australian Seed Conservation Centre, used with permission
Infructescence, fruits: Alisma oligococca; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Infructescence, fruits: Alisma oligococca; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Infructescence, fruits: Damasonium californicum; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Infructescence, fruits: Damasonium californicum; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Seeds: Damasonium californicum; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Infructescences: Damasonium minus; Photo by South Australian Seed Conservation Centre, used with permission
Infructescences: Damasonium minus; Photo by South Australian Seed Conservation Centre, used with permission
Fruits: Damasonium minus; Photo by South Australian Seed Conservation Centre, used with permission
Infructescence: Echinodorus tenellus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Seeds: Echinodorus tenellus; Photo by R. Gibbons, USDA APHIS PPQ, Kirkbride et al. (2006)
Infructescence: Echinodorus berteroi; Photo by M. Maher, USDA APHIS PPQ ITP, imageID.idtools.org
Fruits: Sagittaria sagittifolia; Photo by J. Scher, Federal Noxious Weed Disseminules of the US