Plantae > Tracheophyta > Magnoliopsida > Myrtales > Lythraceae > Trapa > Trapa natans
 

Trapa natans (Bull nut; European water chestnut; water chestnut; water chestnut, water nut)

Synonyms:

Infraspecies

Endangered Species

Status: Critically Endangered
View IUCN Record: Trapa natans

Invasive Species

Trapa natans, commomly known as water chestnut, is an annual plant introduced from Asia and has become abundant in the northeastern United States where it creates a nuisance in lakes, ponds, canals and other slow-moving water. Trapa natans grows best in shallow, nutrient-rich lakes and rivers and is generally found in waters with a pH range of 6.7 to 8.2 and alkalinity of 12 to 128 mg/L of calcium carbonate. Trapa natans out-competes native plants for sunlight and spreads either by the rosettes detaching from their stems and floating to another area, or more often by the nuts being swept by currents or waves to other parts of the lake or river.
View ISSG Record: Trapa natans

Attributes

Edible [1]  May be edible. See the Plants For A Future link below for details.
Flower Type [1]  Hermaphrodite
Hazards [1]  The raw seed contains toxins but that these are destroyed in the cooking process;
Lifespan [1]  Perennial
Structure [3]  Herb
Light Preference [2]  Mostly Sunny
Soil Acidity [2]  Moderate Acid
Soil Fertility [2]  Rich
Soil Moisture [2]  Submerged
Width [1]  10 inches (0.25 m)
View Plants For A Future Record : Trapa natans

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Central & Western Europe Austria, Belgium, Byelarus, Czech Republic, Denmark, France, Germany, Liechtenstein, Lithuania, Luxembourg, Netherlands, Poland, Russia, Slovakia, Switzerland, Ukraine, United Kingdom Palearctic Temperate Floodplain River and Wetlands    
Eastern Iberia Andorra, France, Spain Palearctic Temperate Coastal Rivers    
Okavango Angola, Botswana, Namibia, Zimbabwe Afrotropic Tropical and Subtropical Floodplain Rivers and Wetland Complexes    

Protected Areas

Distribution

North America;

External References

USDA Plant Profile

Photos

Citations

Attributes / relations provided by
1Plants For A Future licensed under a Creative Commons License
2Ellenberg, H., Weber, H.E., Dull, R., Wirth, V., Werner, W., Paulissen, D. (1991) Zeigerwerte von Pflanzen in Mitteleuropa. Scripta Geobotanica 18, 1–248
3Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Protected Areas provided by Natura 2000, UK data: © Crown copyright and database right [2010] All rights reserved. Ordnance Survey Licence number 100017955
Specially protected natural territories of the Russian Federation, Ministry of Natural Resources and Environment of the Russian Federation
Biological Inventories of the World's Protected Areas in cooperation between the Information Center for the Environment at the University of California, Davis and numerous collaborators.