Cyperus esculentus; field nut sedge, yellow nut sedge [Cyperaceae]  Grasslike native perennial, 6-24” tall.  Unbranched, 3-angled main stem mostly covered by leaf sheaths.  Light green leaves mostly near base and spreading outward.  Plant topped with an umbel of yellow or golden brown floral spikes subtended by several leafy bracts.  Shallow, rhizomatous root system with small tubers.  Occurs worldwide on moist open sites.  [040]

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