Cyperus surinamensis Rottbøll. Phen: Sep-Nov. Hab: Marshes, pond edges, disturbed wet areas. Dist: Se. NC south to s. FL, west to KS, OK, TX, and south into Mexico and tropical America.

ID notes:Occasionally C. entrerianus may have somewhat scabridulous culms (Carter (1990). It is generally a much more robust plant, with denser, globose heads and indurate rhizomes; see characters given in Key ZB.

Origin/Endemic status: Native

Synonymy: = Ar, Bah, ETx1, FNA23, GrPl, GW1, K1, K3, K4, Mex, NcTx, RAB, S, WH3, Carter (1990); = n/a – C

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW
• Eastern Mountains and Piedmont: FACW
• Great Plains: FACW
• Midwest: FACW

Heliophily: 9