Maybe one of these is a Zizia aurea seedling?

Well, the gardeners at the Dave's Garden Plant Identification Forum confirmed my suspicion that the first crop of seedlings that came up in the pot I planted my golden Alexanders (zizias d'oré) in were actually Oxalis. Looks like I didn't clean the pot out properly before planting in it.

So I weeded out the oxalis, and ended up with these three plants. There seem to be two species—the plant on the left has smoother narrower leaves than the other two.

Could either of these be Zizia?