Seedling
leaves are glossy green, fleshy
taper to narrow tip
first true leaf has long stalk and broadens at the tip
later leaves have oval blades
roots are not segmented, in contrast to arrowhead roots
Mature plant
leaves are waxy green
submerged, floating, or above the water surface
flower has 6 narrow, white petals in a star shape, each borne singly on a stem
Management
Herbicides, properly timed
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