The other one--which I DIDN'T buy, but only because it was a fire ant nest--was datura. If you don't know this one, the datura family has a lot of the magical plants in it (the two big magic plant families are datura and nightshade, from my limited research). According to some sources, datura--or at least some daturas--is the "zombie cucumber," the active ingredient in zombie potions. It's also used in some flying-broomstick recipes. Not a NICE magick plant, but interesting for what it is. I may go back there and try to get it, ants or no. Not to use, just to have.
Neat!