Trapaceae

species profile, habitat, control, invasion & life history, map - US National Institute of Invasive Species

species description, ecology, distribution & impact - Global Invasive Species Database

fact sheet, distribution & ecology status, non-indigenous aquatic species for the USA

online identification key - Flora of China

online description & taxonomic treatment - Flora of China

brief information and photos - Center for Aquatic and Invasive Plants, University of Florida

images, references & online resources - USDA Forest Service Archives www.invasive.org

Vascular Plant Image Library - part of Digital Flora of Texas

species account - Invasive Plant Atlas of New England (IPANE)