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*Oshuna crassipes (Martius) A. Haines. Water-hyacinth. Phen: Jun-Sep. Hab: Ponds, ditches, sluggish water. Dist: Native of tropical America. O. crassipes is "generally considered the world's most serious aquatic weed" (Rosatti 1987). Originally native to tropical South America, O. crassipes is now a widespread naturalized weed throughout the tropics and subtropics. In the northern part our area, water hyacinth is rare, probably not long persisting. Farther south, it can be an aggressive aquatic weed.

Origin/Endemic status: Neotropics

Synonymy: = Haines (2021); = Eichhornia crassipes (Mart.) Solms – Ar, Bah, C, ETx1, F, FNA26, G, GW1, Il, K1, K3, K4, Meso6, Mo1, NcTx, NE, NY, RAB, Tx, WH3, WI, Rosatti (1987a); = n/a – Pa, Tat; = Piaropus crassipes (Mart.) Raf. – S, S13, Haines (2020b); = Pontederia crassipes Mart. – Pellegrini, Horn, & Almeida (2018)

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Wetland Indicator Status:

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

Heliophily ?: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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