Eleocharis flavescens is a perennial flowering plant species called bright green spikerush, pale spike-rush, or wrinkle-sheathed spike-rush; it is a member of the sedge family, Cyperaceae. It is a clump-forming species that also spreads into colonies. The plants are small and look very similar to other Spikerush species. It is native to temperate North America, the West Indies, and South America.

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