Ranunculus sceleratus L.
Family: Ranunculaceae
celery-leaf buttercup, cursed crowfoot
Ranunculus sceleratus image
Robert Wernerehl  
Etymology: Ranunculus: from Latin rana, "little frog," because many species tend to grow in moist places
Plants: erect, annual/perennial, 8"-20" tall forb; stems stout, hollow, smooth, branched toward the top
Leaves: basal and stem leaves much the same shape with the upper much smaller; kidney-shaped, deeply 3-parted with lobes again divided
Flowers: yellow, 5-parted, 1/4" wide, normally 5 sepals, petals shorter than the sepals; many solitary, stalked flowers; blooms April-June
Fruits: dry seeds in a short, cylindrical cluster
Habitat: wet; marshes, swamps, ditches
Hazardous: Careful, this plant is hazardous!
Conservation Status: Native