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*Ludwigia grandiflora (Michaux) Greuter & Burdet. Section: Jussiaea. Showy Water-primrose. Phen: May-Sep. Hab: Ponds, lakes, sluggish waters of ditches or streams. Dist: Se. SC south to FL, west to TX; disjunct in MO, Guatemala, and in s. South America.

Origin/Endemic status: South America

Taxonomy Comments: This taxon is hexaploid (n= 24). See Zardini, Gu, and Raven (1991) and Nesom & Kartesz (2000) for additional information.

Synonymy: = FNA10, Meso4.1, WI, Wagner, Hoch, & Raven (2007), Zardini, Gu, & Raven (1991); = Jussiaea michauxiana Fernald – F; = Ludwigia grandiflora (Michx.) Greuter & Burdet ssp. grandiflora – K3, K4, Nesom & Kartesz (2000); = Ludwigia grandiflora (Michx.) Greuter & Burdet var. grandiflora – Ward (2012a); < Ludwigia grandiflora (Michx.) Greuter & Burdet – Fl4, WH3; < Ludwigia uruguayensis (Cambess.) Hara – C, GW2, K1, RAB, Tx

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
  • Great Plains: OBL (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily: 8

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image of plant© Keith Bradley | Original Image ⭷


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