thanks, Murky,
Good comments, Tiffany, and yes oleander I was trying to remember- so widely used.
And people so often question plants they see with certain characteristics they think indicate a dangerous plant, but how many question beautiful foxgloves? I read a very scary account of foxglove poisoning, I think the little girl was ok in the end. I don't have the website handy.
I liked Geoff Stein's articles on this topic at DG.