Friggin milkweed

Milkweed sap will cause some folks a lot of problems.
Milkweed had it's hayday though.
I wrote an interesting paper on it's "moment in the sun".
This isn't my paper, as you would need access credentials to read my stuff, but this article will give you an idea about what I wrote. Mine was more a 1st hand recollection from a person who participated in the collection.