Butomus umbellatus L.
Family: Butomaceae
Butomus umbellatus image
Kitty Kohout  
Etymology: Butomus: Greek bous for "ox;" tomos for "cutting" referring to sharp leaf edge, unsuitable for fodder
Plants: erect, perennial, emergent aquatic 1'-5' tall; stout rhizomes
Leaves: sword-shaped, narrow, triangular in cross section, up to 40" tall
Flowers: pink to white, 3- or 6-parted, 3/4"-1" wide, on thin stalks; inflorescence rounded, irregular umbels; blooms June-Aug.
Fruits: dry seed with a long beaked; rarely germinating
Habitat: wet; shores, marshes, lakes, streams; in muddy soil
Invasiveness: Prohibited Invasive - Eradicate!
Conservation Status: Introduced - locally established; potentially invasive