Thanks Iceblossom. I have lion's mane powder, which I've been using in sauces. It gives a mild, earthy flavor. I bought it at an organic, health conscious website, but that doesn't mean that it isn't high in metals. I love the Wicked Healthy cookbook.
We have grown shitakes many times and we started some new logs last winter. We probably won't see any mushrooms from them until at least next year. We love growing mushrooms and have also grown oyster mushrooms and porcinis in bags. We have Chantrelles growing wild on our property and go on mushroom hunts during the rainy months. Morels are my all time favorite mushroom and they are supposed to grow around here, but I've never found any.
As for medicinal mushrooms, I'm still hunting for more information.