Which name should I put this under in the DB?

Pictures and descriptions match Ranunculus septentrionalis, but it's not listed in the DB. Could this now be classified as Ranunculus hispidus? I get the feeling that they're two different plants, but I'm getting mixed results while researching it.

The one in my photos is growing in shallow standing water, blooming now, and positioned in filtered shade in northern Indiana.

Two sites I found say that R. septentrionalis has been reclassified as R. hispidus.
http://www.missouriplants.com/...
http://www.ct-botanical-societ...

Plus there are a lot of other Ranunculus in Indiana.
Ranunculus abortivus
Ranunculus acris
Ranunculus ambigens
Ranunculus bulbosus
Ranunculus fascicularis
Ranunculus flabellaris
Ranunculus harveyi
Ranunculus hispidus
Ranunculus laxicaulis
Ranunculus longirostris
Ranunculus micranthus
Ranunculus pensylvanicus
Ranunculus pusillus
Ranunculus recurvatus
Ranunculus repens
Ranunculus sardous
Ranunculus sceleratus
Ranunculus trichophyllus

That's what I was wondering. Thanks for the information, Jay.