Long slender branches; leaves are threadlike and grow in an opposite pattern or in whorls along the branches; distinct beaked attened fruits in the axils; often misidentified as Sago Pondweed; annual; primary reproduction by seed and vegetative fragmentation. Cascade® use rate: 4 ppm for 9 hrs (1.91 gal/CFS) Teton® use rate: 1 – 2 ppm for 6 hrs (0.67 – 1.35 galCFS)