Anyone saw poisonous frock trees in Argentina?

Has anyone seen the poisonous frock trees in Argentina? I have read about it in a magazine, and I would like to hear where exactly these trees can be seen, since in two months, I will spend two weeks in this country anyway, and it could be a great opportunity to see them.

To be honest, this is the first time I hear about the poisonous frock trees. I was in Argentina two months ago, and I spent there two weeks, but nobody mentioned anything about this. Would it be too much if I asked you to tell me more about it? Just to know for the next time I go there?

I have to admit that I have heard something about it, but I am not even sure where this tree grows. I have tried to find something about it on the internet, but I am afraid that even the internet is not of much help in this case, because I don’t seem to be able to find any useful info.