Plant Invaders of Mid-Atlantic Natural Areas: Water Chestnut Water chestnut http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm Trapa natans http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm Plant Invaders of Mid-Atlantic Natural Areas Plant Invaders of Mid-Atlantic Natural Areas: Water Chestnut Water Chestnut Water chestnut Plant Invaders of Mid-Atlantic Natural Areas National Park Service - Water Chestnut Plant Invaders of Mid-Atlantic Natural Areas http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm Water chestnut Plant Invaders of Mid-Atlantic Natural Areas http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm Water chestnut Plant Invaders of Mid-Atlantic Natural Areas http://www.nps.gov/plants/alien/pubs/midatlantic/trna.htm