![](http://www.alamy.com/thumbs/6/B98BE00F-0E8A-4965-BECB-E365CB5184ED/W2D0KH.jpg)
water caltrop (Trapa natans), Trapa natans, anonym (garden book, 1911)
Size: 2092px × 1497px
Photo credit: © Quagga Media / Alamy / Afripics
License: Licensed
Model Released: No
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