I have a strange weed growing in one of my pots. I'm pretty sure it's a Datura, but I don't know what species, nor how its seed got into my pot as no Datura is native to this part of the S.F. Peninsula. I combined the photos and gab into a blog which can be accessed at http://mysterynightshade.blogspot.com/ (I'm trying to teach myself html) If you can identify my weed, please let me know. Thanks, David E.