Try the RHS plant-finder site on the web. That should help. Have you looked up aquatic seed suppliers? Why do you want seeds? Most aquatic plant suppliers will offer this as one of their plants. I sent for ours from an aquatic plants site on the net and they were delivered in good condition, and are all growing away well now. I can't remember the name of that supplier, but there are plenty of them. Annie

http://www.rareplants.de/shop/prodtype.asp?strPageHistory=compare&CAT_ID=1219