Water Amaryllis? What is this plant...???

I was given a tropical pond plant by a friend who got it from a friend who
go it.... we don't know what is! I don't see it on the plant websites or
pond magazines. It resembles a large Amaryllis (has a bulb) but has larger
flowers and more per head - otherwise you can mistake it for that plant. I
likes to sit in water just over the pot rim all summer and likes to be dryer
in winter. I treat it as a any houseplant for the winter. Anyone know what
this plant is???
--
Carol....
"Whenever I feel blue, I start breathing again..."
My Webpages:
http://.www.heartoftn.net/users/windsong/index.html
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