Three mushrooms popped up in one of my houseplants. I don't know much about mycology. It would be nice to know what they are or if they are edible. One of them matured and died. It is about three inches long with a white stem, brown gills and an orangish\beige cap. The other two are very small, smaller than the tip of my little finger. Here is a link to some pictures: http://theexpansivezone.com/mycology/ It would be great if someone could help identify these mushrooms for me. Thanks!