Lythraceae
Water chestnut
Trapa natans
- Family
- Lythraceae
- Genus
- Trapa
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (53)
- Arabic
- عكر أبو قرون, ابو قرنين
- Armenian
- Ջրընկույզ
- arz
- عكر ابو قرون
- Assamese
- পানী শিঙৰি
- ba
- Һыу сәтләүеге
- Bangla
- পানিফল
- Belarusian
- Вадзяны арэх плывучы, Вадзяны арэх плаваючы, Калёныя арэхі, Каменныя арэхі, Чылім
- Bulgarian
- Воден орех, Джулюн, Дяволски орех, Рогатка
- Burmese
- ကျွဲခေါင်းသီးပင်
- Cantonese
- 菱角
- Catalan
- Castanya d'aigua, Cairell, Pota de bou
- Chinese
- 菱角, 格菱, 丘角菱, 乌菱, 四角野菱, 欧菱, 欧菱 (红菱、乌菱）, 浮菱
- Czech
- Kotvice plovoucí
- Dutch
- Waternoot, Waterkastanje
- English
- Water chestnut, Water caltrop, Jesuit's nut, Bat nut, Buffalo nut, Devil pod, Horn nut, Ling nut
- Esperanto
- Trapo
- Estonian
- Harilik vesipähkel
- ff
- Birji ndiyam
- Filipino
- Water caltrop
- Finnish
- Vesipähkinä
- French
- Mâcre nageante, Châtaigne d'Eau, Mâcre, Macre nageante
- Georgian
- Წყლის კაკალი
- German
- Wassernuss, Gewöhnliche Wassernuss
- Hindi
- सिंघाड़ा
- hsb
- Wšědna kótwica, Wódny worjech
- Hungarian
- Sulyom
- Italian
- Castagna d'acqua, Tribolo acquatico, Trigol
- Japanese
- オニビシ, ヒシ
- Kazakh
- Sw şılımı, Су шылымы, سۋ شىلىمى
- kbd
- Аштрамхэр
- Lithuanian
- Plūduriuojantysis agaras
- lzh
- 菱
- Macedonian
- Водено оревче
- Malayalam
- കാക്കമുള്ള്
- mnc
- ᠨᡳᠩᡤᡳᠶᠠ
- nan
- Lêng-kak
- Norwegian Bokmål
- Vassnøtt, Vann-nøtt, Vannøtt
- Norwegian Nynorsk
- Vassnøtt
- Persian
- سهکنجهخیز, تراپا, سه کنجه خیز, سهٔ کنجهٔ خیز
- Polish
- Kotewka orzech wodny, Orzech wodny
- Romanian
- Cornaci
- Russian
- Рогульник плавающий, Чилим, Орех водяной, Водяной орех плавающий, Чёртов орех
- shn
- တူၼ်ႈမၢၵ်ႇၶဝ်ၵႂၢႆး, မၢၵ်ႇၶဝ်ၵႂၢႆး
- Sindhi
- پاني ڦل
- Slovak
- Kotvica plávajúca
- Slovenian
- Vodni orešek
- Swedish
- Sjönöt
- Tamil
- குரலி
- Thai
- กระจ่อม
- Turkish
- Su Kestanesi
- Ukrainian
- Водяні горіхи звичайні, Водяний горіх плаваючий, Чилім
- Vietnamese
- Củ ấu
- wuu
- 菱角
Synonyms
- Trapa bispinosa var. iinumae Nakano
- Trapa muzzanensis var. europaea Tacik
- Trapa pseudoincisa Nakai
- Trapa pseudoincisa var. aspinosa Z.T.Xiong
- Trapa pseudoincisa var. complana Z.T.Xiong
- Trapa sibirica var. ussuriensis Flerow
- Tribulus aquaticus Garsault
Flowers
- In flower
- June to August (from 63 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: introduced, Lower 48 states: introduced
Photos
FlowerPhoto: Jeff Clark, CC BY 4.0, from iNaturalist 
FlowerPhoto: Mirko Schoenitz, CC0, from iNaturalist 
FlowerPhoto: Grzegorz Grzejszczak, CC BY-SA 4.0, from iNaturalist 
Photo: Wikimedia Commons contributor, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Mark Apgar, CC BY 4.0, from iNaturalist 
Photo: Dasha, CC BY 2.0, from Wikimedia Commons 
Photo: Vasileia Sef, CC BY 4.0, from iNaturalist 
Photo: Radio Tonreg from Vienna, Austria, CC BY 2.0, from Wikimedia Commons 
Photo: Catherine Faber, CC BY 4.0, from iNaturalist 
Photo: Daderot, CC0, from Wikimedia Commons 
Photo: Schurdl, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Marcus Rosten, CC BY 4.0, from iNaturalist
More in Trapa
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.