"Wicked Plants" was a special exhibit at the Conservatory. It was put together from the book by Amy Stewart entitled "Wicked Plants: The Weed That Killed Lincoln's Mother". Alas, there is no index in the book so I'll have to read it to find which plant was responsible for her death.
Click on the photos for some interesting information. Sorry for the lack of photos on most of the plants. The camera and I ran out of "juice".