Not that I've seen, at least... My part of the world's just a small portion of it, so maybe there are.

[ Giant mushrooms, just imagine how many people could live off of that if they were smart about it. Mushrooms can grow so quickly too.

Then again, what if they're poisonous? Hm. ]

I do know a variety of species, but the size range is narrower, so identifying them is more to do with shape, color, and structure...