HELP! I live in Northern New Mexico, Los Alamos to be exact, and lately we've been getting a lot of rain. Well, we have a very large window in the rental we just moved into, and we don't use it much because people can see right into our home. So the majority of the time the curtians are closed. The window seal is made of wood and it seems to not be sealed all that well either. We hadn't noticed, because of a very large flower arangement I have blocking the view, but a giant mushroom has grown up from underneath our window on our window seal. It's white, and kind of thin, and the only thing I could find on the internet that looked like it was an oyster mushroom, which, correct me if I'm wrong, is more common in places like Japan? It also had this white powder, which I'm assuming are spores, that turned like purple or grey when we touched them. It's steem also looked to be growing from the side, but I didn't know if that was a characteristic of the mushroom or just because of where it was growing (from underneath the crank of the window). I'm really embarrassed as a house keeper and mother that I let this happen. I would like some help identifying this mushroom and figuring out how to keep this from happening again. One more thing, when we moved it we saw dried up pieces of something, we thought it was padding from isulation or something, but now we are thinking it was old mushroom pieces, which may mean this has grown there before. ANY info will help! THANKS!