Swamp buttercup

Classification:

Family:  Ranunculaceae, buttercup family
Genus species:  Ranunculus septentrionalis 

Leaves:
Leaves are large, basal, deeply cleft and broad.

Flowers:
Flower develops on an erect stalk, 4 to 6 inches tall. Flower is relatively large, about 1 inch across. Flower has five bright and shiny yellow petals.

Photos: