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Myriophyllum pinnatum (Walter) Britton, Sterns, & Poggenburg. Subgenus: Brachytheca. Section: Tessaronia. Subsection: Spondylastrum. Alternate-leaved Water-milfoil, Cutleaf Water-milfoil, Green Parrot's-feather. Phen: Mar-Oct. Hab: Pools, ditches, ponds. Dist: NB, VT, and MA west to IA and SD, south to GA and TX.

Origin/Endemic status: Native

Synonymy: = Ar, C, Fl2, FNA10, G, GrPl, GW2, Il, K1, K3, K4, NcTx, NE, NY, RAB, S, S13, Tat, Tn, Tx, Va, W, WH3, WV, Aiken (1981), Crow & Hellquist (2000a), Moody & Les (2010); > Myriophyllum hippuroides Nutt. – F, misapplied; > Myriophyllum pinnatum (Walter) Britton, Sterns, & Poggenb. – F

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Wetland Indicator Status:

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

Heliophily: 9

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image of plant© Radford, Ahles and Bell | Original Image ⭷

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