Latin name: Podophyllum peltatum
Member of the Barberry family (Berberidaceae)
Also called Mandrake. The bloom is a single, nodding, waxy 6- to 9- petaled flower attached in the axil below the 2 large, deeply-divided, umbrella-like leaves. The fruit is an oval, fleshy, yellow berry. It grows to a height of 12 to 18 inches. It is found in woodlands and openings, often in colonies. It grows from a horizontal, poisonous rootstock. It blooms between April and June.
"A Field Guide to Wildflowers, Northeastern and North-central North America" by Roger Tory Peterson and Margaret McKenny
Encyclopaedia Brittanica, Volume 15
Photo taken beside my house