Where I grew up in Washington State we had lots of equisetum (horse tail) in boggy spots around the yard and in ditches along roads, etc. It is very old. (There was also always lots of skunk cabbage, but I don't know how old that one was, and I can visualize others I can't put a name to at the moment).

I've been planning to find a place to put a magnolia. That's an ancient flowering tree.

SRS