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Cyperus flavicomus Michaux. White-edged Flatsedge. Phen: Jul-Oct. Hab: Ditches, marshes, natural or artificial ponds, especially where seasonally flooded. Dist: Se. VA and KY south through the New World tropics.

ID notes:This species is unlikely to be confused with any other species in subgenus Pycreus, but may superficially resemble some species in subgenus Cyperus. The lenticular achenes and 2-branched styles are diagnostic.

Origin/Endemic status: Native

Synonymy: = Ar, C, ETx1, FNA23, K1, K3, K4, Mex, Mo1, NY, Tn, Va, W, WH3; = Cyperus albomarginatus (Mart. & Schrad. ex Nees) Steud. – F, G, GW1, RAB, Tx; = n/a – Pa; ? Cyperus sabulosus (Mart. & Schrad. ex Nees) Steud. – S, Tat

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FAC
  • Great Plains: FAC
  • Midwest: FAC
  • Northcentral & Northeast: FAC

Heliophily: 9

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image of plant© Keith Bradley | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷


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