My best guess is Datura stramonium. It is a weed that shows up in random places here in my garden. I see one once every few years. Dennis in Cincy Subject: [pbs] Mystery Nightshade > > 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. > > If you can identify my weed, please let me know. > >