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*Trapa natans Linnaeus. European Water-chestnut, Water-caltrop, Four-spined Water-chestnut. Phen: Jun-Sep. Hab: Farm ponds and other stagnant or slow-moving water. Dist: Native of Eurasia and Africa.

Origin/Endemic status: Eurasia

Synonymy: = C, F, FNA10, G, K1, K3, K4, NE, NY, Pa, Va; = n/a – Tat; < Trapa natans L. – Lin et al (2013)

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Wetland Indicator Status:

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

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image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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