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Red-root Flatsedge is a grass-like annual that forms tufts of stout stems that are 1-7 dm high. Few leaves occur near the base of the plant; they are 2-9 mm wide. The flowers consist only of a pointed scale with a green, ca. 1.5 mm long midvein, which subtends a single stamen and ovary. The flowers are crowded opposite each other into cylindrical spikelets that are 1-4 cm long. These spikelets a...