Plant ID please?

Marsilea sp? Aka aquatic clover from the looks of it. Actually should ask if it's multiple lobed leaves or not . If so looks like clover but I'm on an iPod atm.

hydrocotyle sp. japan?
maybe!

cheers,
big o

I was going to suggest hydrocotyle too but only familiar with what I find growing in the lawn lol.

I have some hydrocotyle that was collected in a ditch and has converted to aquatic growth. I'll post a picture, later, but that would be my guess also.

Dwarf Hydrocotyle for sure. If you can spare any clippings send some my way, I will paypal you....seriously, PM me if your down. Im in Eureka Ca. I will pay for shipping.

Looks like Hydrocotyle sibthorpioides.

Cardamine lyrata

Looks exactly like what was sold to me as hydrocotyle sp. Japan. Grows like a weed once it gets established.