Mayapple (Podophyllum peltatum)

The leaves and roots are poisonous and the resin can irritate the eyes. The fruit is sweet and should be eaten only ripe, its ready when the plant is withered. Only eat the pulp the seed is also unedible

http://www.usi.edu/science/biology/twinswamps/Podophyllum_peltatum.htm is where I found the photo.
I will get a few of my own soon.