When I said "our 'buttercups' " I didn't mean to imply that I was speaking of Georgia's buttercups in general but rather the ones that used to grow in my family's lawn. I know that there are native Ranunculus but the one that grew in our lawn was not. I wish I could remember for sure but it might have been R. bulbosus. I always found them quite pretty but read that they exude allelopathic compounds from their roots so I tried to keep them out of the flower beds and left them to battle the boring lawn grass. Although it looks very similar, I think Sherry's Ranunculus may have slightly finer leaf-lobes than ours did. I don't have any in this yard to inspect closer for sepal orientation and all that other good keying stuff.