1. Water Chestnut Trapa natans L. Brady Seeley

2. Distribution

3. Distribution cont. Prefers shallow water in lakes or streams. Distribution is limited.

4. Basic Info Also called water nut or water caltrop Native to Eurasia Introduced in late 1800’s Noxious

5. Description Rooted, annual aquatic plant Glossy, green leaves Single small, white flowers

6. Reproduction Seeds germinate in the spring Produce hard, nut like seeds in July Seeds can remain viable in the sediment for up to 12 years Seed dispersal by water, animals, and humans

7. Threats and Management Aggressive, prolific reproducer Creates light impenetrable mats of vegetation Coordinate with PA state agencies Public education Include on invasive species list

8. Questions?

9. References Pennsylvania Fish and Boat Commission. AIS Action Plan: Water Chestnut. [Internet]. 2011 June. Pennsylvania Fish and Boat Commission. [cited Oct. 1, 2012]. Available from: http://www.fish.state.pa.us/ais/ais-action-water-chestnut.pdf