Plant ID please. LFS labeled it as "Amnania"

Ammania gracilis. Likes high light, and grows into a bush if you let get out of the water. A friend has a tank on a sunny window and his Ammania has grown 3' out of the water, flowered and set seed!
 
Try this spelling, you'll get better results: Ammannia Senegalensis

It might be this, there are a lot of variable looks - I'm not sure

Roy
 
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