Sago pondweed grows from thickly matted rhizomes. It has no floating leaves. The stems are thin and have highly branched leaves, about 1/16 of an inch wide and 2 to over 12 inches long tapering to a point. The leaves grow in thick layers and originate from a sheath. The fruit is nut-like 1/8 to 1/4 inches long and 1/10 to 1/8 inches wide.
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