Does it produce seeds? From the tangled stems and leaves in the photo it looks like one of the narrow leafed pondweeds (Potomogeton). It is pretty hard to tell what it is from a tangled plant mass in a photo. A better picture of a single stem with leaves and growing tip would/might be more helpful for identificaton.

Last edited by Bill Cody; 07/13/10 09:21 AM.
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