Datura stramonium

Datura stramonium is commonly called Jimson Weed. It got this name from the town of Jamestown. In the 1600's, starving settlers were willing to try anything. They figured that if they boiled greens, threw out the water, reboiled them, etc. a few times, any poisons would be eliminated. The toxins in jimsonweed are very strong; this treatment did indeed avoid death, but the settlers were dazed/stoned for several days.

See also Datura