Sagittaria latifolia
Appears: Summer and fall, perennial
Native to Wisconsin
About 1-2 feet tall
Find it along riverbanks and lakes or even right in the water. We’ve seen it rising up in shallow marsh water among lily pads as well. The large arrowhead shaped leaves are easily recognized even if the flowers are yet to bloom.
Photo taken by Preamtip Satasuk on a canoe trip on the La Crosse River with a Canon PowerShot S100 12.1 MP Digital Camera
with an underwater housing (just to be safe).