Wicked Plants

I don't know how much of this I'll retain but I thought it was interesting and well written.

The weed that killed Lincoln's mother was white snakeroot. White snakeroot contains the toxin tremetol; when consumed by cattle, the meat and milk become contaminated with the toxin.

I also want to remember that yew trees are poisonous, I recall Stewart saying ‘every part is poisonous except for the skin of the berry, but the berry has a poisonous seed' or something along those lines.