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Yellow nutsedge, Cyperus esculentus, tubers.

Close-up of two round, brown and textured root vegetables suspended by thin, intertwining roots against a dark background. Copyright information is at the bottom (Copyright 2007 The Regents of the University of California. All rights reserved.). Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources — Credit: Joseph M. DiTomaso, UC Agriculture and Natural Resources

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