Horntoad said:Looks similar to sagittaria blooms. Do you have photos of the rest of the plant?
From the images Isee in a quick search, it's not the same. These flowers grew directly out of that central stalk; the pictures I'm seeing have little lateral stems with three flowers on the end, instead of two by two up the stalk.... (that would be Sagittaria latifolia, and I am not finding much else in the way of flower pictures for these....)
