It looks like a buttercup. They supposedly grow wild around marshy areas here. I've seen a few buttercup looking plants but haven't paid attention to the foliage. I'll check the next time I take a walk near a wetland area. If I find one I'll dig it up and see if I can get seeds for you.

Thanks karyn, i tihkn its gonna be a great addition to my garden, i have some boggy spots that i tihkn it should do well in
Siam.

i know this is an old post but would love some for my bog and to start a native pop by my stream which seems to be taken over by invasive lesser celendine would be willing to pay for postage. have a few things i could trade but not many, 1 being water forget-me -nots